do you have a OBS panel on a brick?
OBS door (metal part) and wing window from a 92 on a 91 truck, with the 91 panel. Previous owner did it, and I got the 92 parts truck with the 91.
You can expand your search to 92-97. I know of no differences to interior door panels on OBS trucks.
Btw, IMO, the OBS is the best looking truck Ford ever made. I love the mid - late 70s models as a close second.
There is a difference between XL and XLT (or SC vs CC). I put up photos of the difference earlier in this thread