Time for an update to this Thread -
The brakes were just not performing up to my expectations. In fact, when John Holleran, (Holleran's Performance, Auburn) drove my car he said it was the worst braking 914 he had ever driven. Mind you, he has a '70 914-6 he has owned since he was 15 years old. He explained when we added the early S front calipers to the equation of the 914-6 GT rear calipers, we screwed up the system and the brake proportioning valve was no longer working like it was intended. He suggested Carrera front calipers, 24mm rotors and a 23mm M/C. He said you will not believe the braking you will have.
So, off came the early S calipers and rotors and on went a set of PMB rebuilt '88 Carrera front calipers and 24mm vented, drilled rotors. At the same time, we deleted the brake proportioning valve. We planned to replace the master cylinder but it was running late in shipping. We buttoned it up and the difference was significant. The 23mm M/C arrived and we installed it yesterday. OMG! What a difference in braking. The pedal is right at the top and the stopping is better than I had ever hoped or dreamed for a 51 year old car. I am beyond pleased with the brake re-do. John was absolutely right.
I had the Rennshifter in my car and it was always problematic, making shifting a chore. It was always tight/stiff. That caused me to actually listen to Jim (Banananose) and consider putting the stock shifter back in the car. That would also have then added bonus of allowing me to have the hand throttle back in the car. Yes, I have a 3.2 with Motronic injection, so the hand throttle was not needed for starting. But it would be kind of a cruise control on the freeway when there was no traffic, right?
John actually looked at the entire shifting mechanism in my car and ended up replacing the rear shift rod with a new one he made, removing one of the joints. He then adjusted the RennShifter and told me to drive the car. It was a world of difference and shifted very nicely now. No tightness or fighting it at all. The problem, I was already wanting the stock shifter back in my car because I now did not like the larger base of the RennShifter for my otherwise pretty stock looking 914-6 interior.
So, I sourced a stock shifter, rebuilt by Brice Stone and in it went. It was then we discovered my pedal cluster had the wrong clutch pivot arm. I had one from a SC instead of a 914-6. So I contacted Bruce Stone and he sent me the correct arm. Installed and problem solved. I drove my car and it was like rowing a canoe- the shifter throw was so long from 1st to 2nd. So I sourced a new Weltmeister short-shift kit for a side-shifter and we installed that. The shifter arm was too short to be comfortable for me. Out it came and we cut the Weltmeister shift lever off and tig-welded the stock arm onto the Weltmeister short-shift kit and back in the car it went. Amazing! Now it looks 100% stock and yet it shifts very nicely with a short throw and I have the hand throttle back in the car. Well worth the effort.
Finally, as I now have about 7K miles on the car since it all went back together, I wanted to get it aligned again to make sure all was right. John recommended MSI in Roseville and said he is an old-school Porsche guy and knows these cars and how to align them correctly. So yesterday it went to Mark Stein, (MSI) and he aligned it. He found it to be a little off at all 4 corners, but not bad. He brought it right to where it needed to be. It now runs straight down the highway with no hands on the wheel and drives a lot better. Well worth doing.
I think I am now ready for WCR at the end of July. The only other item on my list, and it is purely aesthetic, is I am going to pull the Momo steering wheel hub off and shorten it about 1.25" to close the distance between the steering wheel rim and the turn-signal/wiper-arm stalks as I currently have about 3.5"- way too much. At the same time, I will send the 370mm Prototipo off to Dallas Customs to have it double wrapped in their high quality leather and complete that with black stitching and call that done.
OK, that is an update of what has been happening in the background on my car. It continues to run exceptionally well and just sounds amazing with Ben's (MB911) full exhaust system. If you have a 6 in your car and can get your hands on his exhaust, you will never regret it. Everyone comments on the sound when it fires up.
What is in the pipeline for the future? Well, at the end of fall/early winter, we are probably going to drop the motor to address a rocker arm shaft making a little noise. Nothing alarming, but since we will be doing a valve adjustment, that is the time to address that.
Also, since my transaxle is still leaking about 4 drops when I park it, John is going to pull it apart, check the internals to make sure it is as it should be and then reseal it. He guarantees it will not leak once he puts it together. I hate oil leaks, so that is great.
Thanks for reading and following along on my build.
He was blown away by how it sounded, rode, pulled and handled. I still am not driving it hard but it did see 5K on the tachometer a couple times. I did one nice run on a long, smooth uphill freeway on-ramp, first through fourth and he was surprised. Coming home we went around a few nice turns and he said, "it's more go-kart than car". Then I put it up on the lift so he could see under the car and he was amazed at how nice it all looked. 
You will be please. 
you have excellent taste! It all looks so good together!
