Depends on the kit, but they all move the wheels out. If you think about how the disks fit on the axles, and how thick they are compared to the mounting area of the drums, it usually means the wheels get moved out about 3/16" to a 1/4".
They will fit on an A-body with the wheels in the stock location, but whether or not they'll work with the wheels you already have is a different story.
Wanting to upgrade my stock axles on my bracket race car. Going to lbp so, I will need new wheels and brakes also. Planning on using the Speedway weld on brackets for gm metric calipers. Looking at Weld Pro Star wheels.
