So i just brought the truck home, its pretty solid truck. No major rust outs. But i am having a problem trying to identify a few things. Maybe i can get some help from the fellow hambers. The only castings i can find on the trans are "ta4040 rfc8tp" it says fomoco on the side. And the rear end the only casting i can find is a u.s. patent- 2018188.... i noticed when i drove it home it felt like i was stuck in 2nd, maybe the rear is geared wrong for this drive train?