The trim lines may not mesh perfectly, but I'm pretty sure it'll bolt in place. You'll have to use the '83 tailgate, though.
AFAIK, any '80-'97 bed will interchange as far as dimensions and bolt patterns are concerned...again, the only difference is that the trim lines aren't the same. Heck, I saw an '80-'86 truck with a SuperDuty bed bolted in place; don't know if the guy modified anything...in any event, it didn't look "right"...