[abaird]

With enough money and time I suppose it could be done. There are companies that make full size vans into 4x4s. The easiest way would be to buy a junked/wrecked 4x4 of roughly the same year. There would be a lot parts that would need to be swapped. The 2wd trucks had completely different front suspensions whiched used coil springs instead of torsion bars like the 4x4s. If you are open to purchasing another vehicle I think that would be the way to go. There are alot of low priced, reliable early 90s chevy 4x4s out there.