What I think I know:
The tail light lenses (right & left pair) are the so-called 'Euro' style also used on Maserati Bora and Merak. U.S versions are all red with no amber. The third type- so-called GR-4 lights will bolt on & plug in, but are different enough that a matching bucket with different reflector dividers inside must be used with them. Hall Pantera used to sell conversion buckets with pop-riveted sheet metal dividers that sort-of worked with GR-4 lenses.
The spindle nuts on '71-'72 Panteras (plus the Mangusta and maybe the Longchamp) come in left and right hand threads. '73-up only come in right hand thread. No cotter pin is used with these racing-type spindle nuts used on our stock street cars.
Many window switches will 'fit'- some BMW look-alikes will need a bit of dashboard file work to lock in.