I posted previously about Z-bars..
I had a similar clutch linkage issue in my 70 RR.
When I had things apart, I talked to our local Mopar guru and he showed me (2) other Z-bars that had the same mounting width but the tab for connecting to the pushbar/fork was located differently on each of the (3).
I had no idea about differences, but using the wrong one caused alot of linkage issues.
The bottom line was to use the Z-bar that caused the push bar to run parallel to the bell housing and push straight back on the fork.
I looked at each Z-bar but didn't find any part #..
I was just fortunate to make contact with our local Mopar guru who knew about about this..

Just my $0.02...