So I dropped off my stuff at the platers today and orderd parts so I'm hoping that i'll have everything by the end of the week. I useto have a 911 front end with "A" calipers and stock rear calipers. I saw the threads on the 911 rear brake upgrades so I decided to do that. So all the stuff is coming together. I took the stock proportioning valve out when I put the 5.8L in the car because it wouldn't fit. I just have a T in there now.
So when I put the 911 front end on I got a 19mm master cylinder. My question is whether or not I need a proportioning valve with the bigger rear brakes? Will it be a trial and error thing for when I get the car back on the road?