Ok heres my situation. I have a 93 4cyl car, that I am converting to a V8. The car is going to be a street car, and I want it to be quick. I picked up a donor car. It is a 90 V8 car. I know that wiring is different but thats ok because I have a computer and harness out of a 93 V8. Anyway the donor car has 55,000 miles on it. The car runs and starts good. There is no blue smoke at startup. It hesitates a little at idle, and the check engine light flashes a little sometime under load. I think it just needs a tune up and it may or maynot have cats on it. So my question is tomorrow I am gonna do a compression test. If the motor is strong I was thinking of doing a heads and cam package on it before putting into the other car. Is it worth doing on a motor with 55k on it? My other plan was to buy a 347 from fordstrokers for $1900. I'm not sure which direction to go in. What kind of power differences am I gonna see with the 302 with a cam and head package vs. the 347 with cam and heads. I dont want to invest a lot of money into the stock motor and not get a great turnout, and have a motor that is half baked anyway. Any suggestions? thanks.