Has anyone run TFS 170 TW heads on a 331? Thinking about stroking the 5.0l in my 94 cobra. currently I am using the 170 TW heads on the engine, but not sure they will flow enough to make 400-450 hp at the crank if I punch it out to 331. Also, will the cobra intake be able to feed enough air for the 331 to make that kind of power? Car is to be primarily driven on the street. Thinking about n-71 cam from anderson ford motorsports or possibly a comp or TFS cam. Just trying to keep the cost down. any info or opinions will be helpful.