Help! According to the title this is a whitegmc Volvo wb

Hi, I'm new and I bought a white/gmc truck however looking up parts is a nightmare because the whitegmc option doesn't come up with a wb sub category and thus the need for me to post this thread.

What I'm sure of.

It's a 1992 whitegmc with a 12L Volvo engine and an Eton fuller 9speed transmission. I'm hunting for a way to replace the missing drivers side headlight lense with a led or something like that so it's obviously legal and dot will leave me alone.

The headlight assembly is too big for the 5x7 sealed beams closer to 11x7 if anything. I have a part number off the headlight lense cover from the pass side of 936 591-00 or sae hr 89 all come up with a 5x7 on the Google machine