Originally Posted by flyman
Moparx there is a outer hub that can be changed to make it a 4 1/2 " bolt pattern on the ford stuff.


i didn't know that. what would that hub be from ?
if i were doing an IRS, i would probably use the challenger unit and modify the width to fit, just due to the added torque that unit was designed for over the ford unit.
but that's just me.
beer