Iam quite informed i was racing small blocks in the 70s
132 mph thru manifolds end of story
Hemi race darts were just trapping 130 in 68 69 huge slicks lighter then that duster 2 1/4 headers 4.56s 4.88s
Its a 71 already has the best intake carb
See i can pretend that you dont know the 71 intake and carb are the best like you trying to tell me about the tricking the exhaust with the cam
132 mph game over