I had a set of Western mags 8" and 10" back in the late 70"s and they were " multi fit" and had elongated holes, they were a bastard to fit as the wheel nut had a huge shoulder to align the rest of the holes so you had to put one stud at the top then mount the wheel then move the wheel to get a second nut on then Bobs your uncle beautiful mags deep lip with 5 slots