HI Olaf The motor you have sounds good. You sound like you want to do the same I do with the car. Here my car and combo. ERA car, 452 Alum Shelby motor. 9.2 to 1 compression, 501-533 cam, Novi 2000 Paxton supercharger, Fuel injection from speed-pro, 6-speed nash trans, 3.31 rear Jag rear. Car idles at 800 rpm and passes 95 emmissions in NJ. I Built my car to do all around playing with. the motor puts out 328 rwhp and 422 tor. rwp. It will break the tires loose in 3 gears, without the supercharger. It makes over 550hp and is an animal to drive with the boost. except for the exhaust nobody hears you coming and its quiet all the time. You might want to look at turbos or a supercharger and have alot of power and enjoyment without a ton a maintanance. I have been to Northeastern challenge and run@gun and had a great time and no breakage. I run B.F. Goodrich tires, which are not the greatest, but will not break the drive train. The trans is at it's limit for h.p. and torque. 450 on both. Most people do not like my set up, but I get in the car and it starts right up in any condition and runs great. It was alot of work to get it set up but is worth it. Driviablitity is the greatest thing about these cars. 12.5 compression is old school, (been there, done that) If you are going for origanal car you are going great. I Feel that this is the way of the future and it works for me. Heads,Intake, and Exhaust all need to work together. The car will only EXECPT so much power
Good Luck Rick Lake