I have 3 500 inch Motors that I use that Mopar 337 manifold on. all street cars, and all make 700 horsepower. I use solid rollers in mine also. 272/276@.050. I think they are an all-around great intake. An added bonus is that they fit under stock hoods....

68 cuda formula S 588" bb 5sp
70 CUDA CONVERT 500" 5SP (SUBLIME)
70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!