Tire clearance
If your car is small bolt pattern 4 ". You can drill your axles and drums to big bolt pattern 4 1/2 " in the rear. You will then use any 8 inch wheel with a 4 1/2 pattern and a 1/4 inch spacer. This will give you the 4 1/4 BS needed.
On the front if you have small bolt 4 in rotors you can replace them with 1968 mustang rotors from any auto parts store. A sleeve will be needed for the seal. You will now have a big bolt car with all your small bolt parts . Wheels will now be readily available.
Just something I see being done if you want something new besides Cragars. You can also have steel wheels made using your factory centers. Any width any offset. These wheels cost me $100 each to have made That was with the cost of the ring. I provided the factory wheels for the centers
If your car is small bolt pattern 4 ". You can drill your axles and drums to big bolt pattern 4 1/2 " in the rear. You will then use any 8 inch wheel with a 4 1/2 pattern and a 1/4 inch spacer. This will give you the 4 1/4 BS needed.
On the front if you have small bolt 4 in rotors you can replace them with 1968 mustang rotors from any auto parts store. A sleeve will be needed for the seal. You will now have a big bolt car with all your small bolt parts . Wheels will now be readily available.
Just something I see being done if you want something new besides Cragars. You can also have steel wheels made using your factory centers. Any width any offset. These wheels cost me $100 each to have made That was with the cost of the ring. I provided the factory wheels for the centers