Yeah thats a 4.11 like what Eric got. I highly suggest doing 1 thing above all else. That is buying the shift resistor from svxfiles. It is a shift kit (kinda) which will prolong the life of that 4.11. I also suggest a fairly large trans cooler if you don't already have one in series with the factory rad cooler (there is a reason its in the radiator). Now if you have a problem finding a 4.11 5 bolt sideplate rear, I just found one in my shop tonight (looking for my 4.44 I found a 4.11 too
) Anyway, if you need one in a hurry I can get it to ya
Tom