I really like this site and have obtained a lot of info. One topic that I've read about is the E303 cams and piston valve clearance. I have '66 fastback and obtain a 302 HO motor out of a 1988 Lincoln. The engine was a replacement motor from Jasper. I'm looking to build a street motor that is quick, reliable and gets decent mileage. (Might be asking a lot) I was wondering if I should keep the original cam or use the E303 cam or B303? I really don't want to pull the heads, do I need to check the valve clearance? I will be using a performer RPM intake and 650 carb (might change to EFI in the future) and I have T-5 and 3.25 rear (might go to 3.73's). Any advice is greatly appreciated.