I used some older mustang wheels on my car-'68 Barracuda, the backspacing caused me to get some custom studded wheel adapters for the rear. The front I need to cut the center register on the rotors, just a few thou. The center caps stuck out past the face of the wheel, I've worked out a solution, I'll post some pics later, but it is a compromise and I'm not sure it will apply to the Weld wheel. BTW, I really like those Weld RTS wheels The best bet is to mount them up before you buy or carefully measure YOUR car, these are mass produced and tolerances can and will cause problems.