The late-90s Chevy HD3500 trucks use the same 10-lug bolt pattern although the center hole may be different. Note that these trucks use the 88-00 body style and should not be confused with the 2001-up 3500HD trucks. The GM P-chassis also came in a version that used the same 10-bolt wheels. These platforms are used under many bread vans and RVs.

These trucks came from the factory with 19.5 one-piece steel rims. In addition to the factory steel wheels, you can get Alcoa aluminum 19.5 wheels with the 7.25" bolt circle. The fronts are here:

http://www.alcoa.com/alcoawheels/north_america/en/product.asp?cat_id=938&prod_id=1190

and the rears are here:

http://www.alcoa.com/alcoawheels/north_america/en/product.asp?cat_id=938&prod_id=2901

Good luck.

Joe Padavano