Yeah, 92-94 was OBDI. If you want a newer swap it will be OBDII and you'll need a lot more wiring and computer. Not just a simple (yeah right) drop in, bolt it on and fire it up. It'll take a lot more changes. The computer in the OBDI is in the dash and the OBDII is in the engine compartment. ANd the fuel lines are different shape from 96 up. Not sure if the tranny's match up either. The computer might be different for that too. But someone with more knowledge on tranny's than me can comment on that.
1995 GMC Jimmy SLT 4x4
4.3 V6 Vortec
over 200k miles and still purrin