Can someone please help? I have a 72 c10 with what seems to be Xtra heavy duty suspension. All front end parts I've replaced are larger than normal, bearings, rotors, calipers. Now I'm working on upper control arm bushings. So I'm figuring out that control arms are larger also, I think. Stock bushings are a nut that threads into bushing. What I have has a large washer holding bushings in place. Stock contol arm shaft is approximately 9 1/4". Mine is 14 1/4" long. I don't know if it was possible to install a different vehicles front end in the truck. Does anyone have any idea what I'm up against?