I have a 1982, repainted, no badges.
Does anyone know how I can tell if it's a GSL package or not?

 

GSL had power windows, rear window wiper, limited slip diff with 4 wheel disc brakes. I don't remember if they all came with leather or if that was an option. Might be a few other things I'm missing but that's the obvious stuff.

 

leather was an option on the GSL, but as stated above the GSL came with the power windows, sport seats, limited slip diff, rear wiper, rear wheel disc brakes, and an uprated ETR Clarion stereo system.

 

Definitely just the standard package then - thanks for the info.