I hope the 9" hold the car with the 511" it has SD intake,eddy head,850 holley.It will be 50# lighter on the front-a fiberglass hood,mini starter,2 135x15r tires on 4" rims it had 6"rims and tires.The 10"x29 that I have is 91.5" rollout worked good but the 9"x30 rollout is 94" maybe will work better with 456 gear. Dose anyone run in the high 9s on 9" tires.