Thanks for the replies and information!!
Ok, it is a 4-speed. I don't know why I was thinking it was a three speed. I should probably go hang my head in shame, huh? Haha!
The floor plate over the transmission inside the truck is actually from a bus, apparently - it doesn't fit quite right. It's school bus yellow, too. The owner that had it before said that he blew an engine trying to push it too hard at highway speeds.
As for what rear end is in the truck... I don't know.
The engine is apparently a 250. I actually haven't had a chance to take a real close look at it myself, but that's what people have told him. I do know that the plate inside the truck says "230". Of course that doesn't mean anything since the engine has been swapped at least once that I know of.
