I think I got it. Best I can figure is something you don't run into often. Progressive tolerances.
The engine measures about the same, maybe an 1/8" over Jims but I do have new urethane mounts. All the parts measure correct. Z=9" Stud= 1 3/4"
I pulled the bracket off the frame and put a straight edge on it, it had a slight crown and some high spots, the bracket had a slight crown as well so I pulled another bracket off the race car, it was better but I still put it in the vice and made it flat and straight, I then took a BAH and knocked in the high spots on the frame, mainly where the threads were pulled outward creating the high spots, probably from impact wrench assembly way back when.
I drilled out some .120 shims, one behind the block stud and one between the bracket and Z-bar stud. Got it all back. Still not sure where that much distance came from but it should be fine now.
I have to take it apart to paint but I think it'll be fine.