Staggerlee -- kudos for doing your homework!! You have presented us an interesting case here...
On the grille .,.. didn't the Big GMCs have a 4-bar grille?
Definitely a Frankentruck... Needs to be checked over *very* carefully to ensure all these different year components were assembled in a professional and safe manner.
Also ... the fact that it *is* a frankentruck should work in your favor pricewise. Unless the seller is thinking if you can be scared off, a more gullible buyer will come along ...
Last note -- welcome to the old *truck* hobby ... The whole "numbers matching" thing doesn't mean to us what it means to the muscle car folks ...
Good luck with your endeavors!
John
