I am probably not your guy because: If it has a closed driveshaft and you want to keep it, not my preference. Keeping the old trans, nope.
It seems like you are trying to say you want it to have the "original" drive train? That's too old.

The pedals may be able to be mounted on a bracket or adaptor to keep them in position. Not sure.

That truck is really neat looking and rare. I would love to have one like that so I could put a 10 bolt rear with open driveshaft and a SBC in it. With a SM420 or 435. There are many other options and T5's and all that. But what I suggest is very simple and plenty of power and leaves the body and chassis original. I would enhance the brakes and steering whilst keeping the budget low. PM me of you are allowed to.


Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn