Rare 1970 GMC 1500 Pickup Truck 6 cylinder 3 speed on the column

READ EVERYTHING PLEASE:
For Sale is a 1969 or 1970 GMC C1500 Pickup Truck for fixing up manufactured 9/69 So maybe technically 1970 that's what the title says
I believe it is a LONG Bed. see pics. Odometer as pictured shows 40,524, but that could easily be 140,524 we dont know as we didnt drive it very many miles at all.
It ran when it was parked there a few years ago. Currently No battery in it. Windshield and both side view mirrors are broken.
May need a new transmission ? or just adjustments to the linkage, as Dad replaced it with perhaps not the right one or the gears / linkage didn't fully match up. it drove but that's the explanation Mom gave, so instead of fixing it again it just sat. But Dad just said the transmission is easily fixable, he just didn't do it. Body is fairly straight. I was told the engine is a "inline 6, 3 speed on the column" if i remember right.
It is sold AS IS, where is . . . fix this up and have a $25K truck. There aren't many left. Best way to get info is to contact us and then call
We have the title. PLEASE ASK Questions
It is your responsibility to remove from the backyard once paid.
Willing to take offers.