Joined: Jul 2007
Location: Dallas-Ft Worth
It's been a while since I've messed with rear gears, but the Auburn limited slip units I am familiar with would not be my choice. They cannot be rebuilt without replacing just about everything in the carrier. They are not the quietest or smoothest units for street use, either. I tried to vintage race one several years ago, and it wore out in three weekends. The Trak Lok style units, either new or used, can be rebuilt easily and are very serviceable for street or occasional competition. The Power Trax of old had way too much freeplay for my taste, but I understand they were bought out by Richmond, who improved them quite a bit. I believe Currie at one time was selling NEW Trak Lok carriers that should be stronger than the originals, since they were 4 pinion units like most 9". The Ford 8" units are all two pinion setups, and that is their weakness.