Hi I have not posted here in a long time. I have a 38 GMC(same as a Chevy)I adapted some original brake and clutch petals to the frame put power disc brakes on my truck. here is my question, how close can my power booster/master cylinder be to the exhaust with out it causing some kind of a heat problem with my master cylinder. ya I know it is a design flaw on my part and I am going to fix it I just need to know how far the minimum distance is so I can fix it right the first time. Also would a heat shield of some kind help me any