A friend just bought a 512 lift cam and stuck in his 5 liter. After only putting like 30 miles on it he decided he wanted a 542 instead so he is going to hook me up with the 512 if i want it. I have a stock cam now and my mods so far are listed on my signature. Im trying to decide if that is the size i want or not. My car is a daily driver but i want a lot of balls and strong lope from my cam. Would this be right about the lift i would want out of a cam or should i just go ahead and get a 542 as well? If i get the 512 what lifters should i get? I know im not going to get a big gain from it without changing the stock heads but i'm doing it anyways and when i have the money im getting some heads =) Any info would be greatly appreciated.