Well, if the idiot on CL who's trying to part out his '88 V6 would ever get a clue, I might be able to tell you. He re-posted his ad today, again with no contact info. What a rube.
I'd buy his V6 3rd to rebuild since they're stronger and I'm planning to go V6 at some point in the not too distant future. His truck also has a nice, clean interior that I'd like to have and if it has AC I'd take all those parts too.