I have a set that Dave made for my 51 GMC 1 ton. The current brackets are great as the first edition needed some revisions. The 2011 CHEV Express van, 1 ton calipers, rotors and the dual M/C with the power boostermakes like WONDERFUL! The earlier ones with the shortened steering shaft made turning radius distance really increase. I think the 3/4 and one tons are the same.