A fundamental part of any muscle car is a nice, strong rearend fitted with a limited slip or Posi unit. What good is it to make gobs of horsepower if you can only do one wheel burnouts or if the diff ...

Everyone knows the Ford 9-inch is the ultimate rearend for high-performance applications, especially in drag racing and hardcore street/strip builds, but for diehard GM loyalists, swapping in a rival ...