As Todd mentioned. with 1.25" thick spacers, the stock length studs will protrude past the face of the spacer. I cut the unthreaded part of the stud off because my wheels are flat on the mounting area. So the stock wheels, because of the recesses on the back, will work with 1.25" spacers with no cutting. Or you could just get 1.5" thick spacers to use with any wheel.
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I got mine from this place on eBay....