There are plenty of rust bucket Ram Chargers out there available for parts. If you take your time and shop around you can probably find a fuel injected 92-93 like I did for near the price of a custom aluminum fuel tank. Plus you get the mounting cross members and a bunch of spare parts. I'm using mine for the MPI Magnum, HVAC, seats, dash, tilt column, intermittent wipers, power windows, locks and more to upgrade my crew.
I think you're right; I can probably find '92/'93 not too terribly far, just not anything much earlier. Florida has so much rain and dampness, these have disappeared from even the yards. But I'll have to find the time soon to search more for myself. He is in Arizona so ought to be a lot easier for him to find some in yards.