I have a78 CJ 7 with 42 inch tires and 60/70. The brakes are Corvette fornt and 2002 Chevy Rear (both discs). THis shoudl be a pretty good setup but i still have the stock master cylinder and proportioning valve. I want to get a power break booster but i dont have enuf $$ to buy anything new. What kind of vehicle (truck or jeep) and model should i look for to make the easiest swap/upgrade? do i need to get rid of the porprotioning valve since it is setup for disc/drum?? any help is appreciated.

Check out the Hydro boost system, search this board, and check the writeup on my site, it's been covered many times.

Thanks man, awsome site BTW.