Depending on who you ask, discussion of the GM 10-bolt ... rear axle an upgrade and a facelift courtesy of Eastwood, Summit Racing, and Classic Performance Products. What we had at the end of ...

Building a rear end capable of withstanding 800 horsepower ... The 1971 A-bodies were no different, some had the coveted 12-bolt while others had the 10-bolt and the 10-bolts also varied in ...

We used Reider Racing's "full" installation kit for our 12-bolt. One of the best performance modifications that can be made to a street machine is a change in rear ... of the GM 10- and 12-bolt ...