[Duck1]

Originally Posted by kipps

The 9.5 14bsf was used in most of the 81-91 3/4-tons. It came with either 11" or 13" drum brakes, depending on the brake rpo code(jb5 vs jb7), and depending on the gvwr(7200 vs 8600).

I'm quite sure you won't squeeze a 15" rim onto the 13" drum. There's no wasted space on those at all with a 16" rim. The 11" drum would have a chance, I would think.

The 9.5 14bsf came in some big-block half-ton gmt400 trucks, and would have been drilled for six lug. Those are probably getting quite rare now, and even if you found one, you'd have to move the spring perches.

If you have a friendly and competent machine shop locally, you could probably have a set of squarebody 9.5 shafts welded shut and redrilled to a six-lug pattern.

Also consider a gmt800 10.5 14bff axle with disk brakes. The disk brakes lose a lot of weight compared to any drum brakes, and the ring gear and housing can be shaved for an additional 2" of clearance.

No 15" Wheels.