you have a 4x2? the 7.5 uses the same 3rd member as the ifs front 4x4 trucks use... so the yare durable, to a point, but an 8" is much better... if you dont have an 8" then you would need to do a complete axle swap over to it.....
i dont think the 7.5" came in any truck that wasnt a 4x2 in the rear... my truck is a 4x2, and has an 8" rear [g662]
