My 70 c60 I used to have was switched over from 20s to 22.5s without a problem,big ol Michelins on it.
It would roll down the highway at 65-70 with no problem with a 292 and a 4spd with 2 speed rearend.
My friend told me theres 2 different sized holes between the different alcoas,but we would figure it out when the time comes.I know that Ill need longer wheel studs to make up for thickness of the aluminum rims.
How do ya post pictures on here anyway?