...as far as mismatched parts...The bell side pivot ball is the one that was on the car when I got it, and it matches the one that Oldmanmopar identified above as the correct '68 part. The Z-bar itself is new, purchased from Laysons, and it matches exactly the old part (minus the wear:lol:). The keeper spring, seals, plastic bushing/bearings came in a kit from Year One in Mopar bags and they all fit perfectly. The fender side ball stud matches the size of the old one.