Rear ends

And what application
I mean a streeter doesn't need discs back there. And a streeter, can't make a lot of power hook, so you may not need a HD rear. And a street teener automatic, with 8/1 compression is gentle,really gentle, on the rear;no matter what big cam you put in there.In fact the bigger the cam, in an 8/1 automatic engine, the easier she will be on that rear.So 268 here we come!
So, what engine, what tranny, what size tires, and what application?