welcome to the garage to both of ya!
sounds like coach wants to make the 3 speed a floor shift .... that's not "restoring" granddads truck, it's modifying it, and it's a puzzle why you'd want that particular modification, but the trans is pretty much the same as the later years, so any aftermarket shifter could be pretty easily adapted to it - if you can bend up a rod for it that'll clear the seat and the gas tank
OTOH, if you want to make the change because the column shifter isn't working right anymore, look around the shop and you'll find lots of discussion about fixing that up
Bill
