Rear Sway Bar Question

[L78_Nova]

Mocking up a Nova rear sway bar from various parts.
-one NOS sway bar spring perch
-one modded (was NOS) sway bar spring perch. (ran on the mini tubbed Nova for a few years... will rework back to stock configuration)
-several bars all the same
-two different styles of uprights

QUESTION IS;
Which uprights would be correct for 71-72 Nova ??
Lower clam shell straight down or 90 degrees
The 90 degree uprights have a little dog leg offset to them.

All dimensions check out
-center pins 43" (matches the diff)
uprights approx. 25-1/2 centers (matches the body)














Thanks for any input guys !

Gary