Price check. How much for M caliper + e-brake conv. Options

[Richard Casto]

I am trying to determine what fair market value for the following is…

* Pair of used rear 911 M-calipers. Is there a price difference for the early (with knock-back) and later (no knock-back and cup pistons)?

* Pair of used parking brake backing plates and associated hardware from a 70-73 911. I believe the 70-73 is the proper year range so that the mounting holes match the 914 trailing arm.

Condition? I am looking for working, but ready for rebuild/refresh. Basically what you might find if pulled from a running but tired 911.

As you can guess, I am looking to do an M caliper and 911 e-brake conversion on the rear of my car. I already have sourced A-calipers for the front.

[charliew]

If you go to the center a one to two cable off a 944 should work great. I got two different sets of 944 eb assemblies, all the hardware and shoes from two different yards I found on searching porsche yards. It was 160.00 for the early backing plates and a set of 944 shoe and hardware shipped to TX. from AZ. The other yard sold me the 944 cable, a nice leather covered handle and another set of 944 eb assembly. I posted the yards and prices on another thread here or on the club. The yards I used were familiar with this modification.

Being able to look at what the yard is selling is the best way to deal on these parts. I hate buying unseen parts because everyone says I am too particular. The backing plates are pitted some because of their age. The pistons are the question mark in used calipers. The ss pistons are the cats meyow but they cost enough to add significantly to the cost of the completed caliper. Also new pins and springs are expensive. I zink plated some of my hardware and that helped some but the pins that came with the second set of alfa calipers were pitted severly and even replating didn't help their looks.

Used alfa aluminum calipers were 250.00, those came with new pins and springs, without shipping from the northeast. I found a ebay alfa seller, They are called DiFatta Bros. Pretty nice seller. He new exactly what I was looking for. The second set were newer calipers but had shitty pins and springs. The second set had good pistons and the other had pitted pistons although the pits were outside the oring. I guess they will all have some pitting around the dust cover lip. Once the rust eats the chrome plating the damage is permanent and will only get worse. The black coating on the alfa caliper protects them well especially in the bores. Add 75.00 for ss pistons, 60.00 for pins and springs, 50.00 for rubber and it gets expensive real quick.