did the 20b come in any of the older rx7s or just the last generation, I want the more powerful one. I think my fab skills are pretty good, Ive put a few engines in cars they didnt belong in. Im gonna build this truck from the frame up so I might even try to make an rx7 rear end fit under the back, Im sure it can all be done and it doesnt seem like it would be too hard. I know it will all fit in there its just a matter of building motor/tranny mounts and some crossmembers. Im hoping Mr. 2JZKIDD or somebody at Mainstream Performance will get it running after I get it in the truck, Im not soo good with wires.