Say all things being equal on the 2 car's, except motor. Lets say a couple 70 stangs. Who would win in a race between a stock rebuilt 70 351 W with the full performer rpm package, and a stock rebuild 1970 351 2v( no aussie cagautha, just stock 2v) with performer manny, holley 600, and a comp 268h cam(218, 218 at .050). All fuel delivery, spark, and exaust being the same. And he put bags of sand in his car to equal the wieght of the cars, since hes running the alumin heads. The story is I have the cleveland and my stupid friend keeps running is pie hole how his windsor with the rpm will just eat up the clev mentioned above all day. He says Ill be lucky to get 300 HP with the small port open chamber 2v's. He thinks I should not spend any money on induction for my motor without adding the 4v heads. I think its a bunch of bs. His complete setup RIGHT NOW will absolutely kill my car, but shoot , im still running the motor craft 2v. But Im just thinking the clev should put out just as much if not more than a windsor with rpm. I would just like to see opinions of others. Nothing serious. I know its a " let the dyno do the talking" thing. Im just bored out my mind right now. Take care.