Doing differentials and rear ends since 1981, with over 10,000 satisfied customers. A huge inventory of rear end and differential parts, both new and like-new reconditioned assemblies and parts, in stock when you need them. Fast turnaround of only one or two days on most jobs. One year warranty on all parts, assemblies and workmanship. Locations in North Bay in Sonoma county in Santa Rosa and in the east bay in Livermore. Price savings 50%-66%