So here is what I found this weekend:
The truck itself is on a 125" wheelbase with a 10 foot box, according to the GVW plate I found it's rated at 7000lbs. It also has a 2 piece drive shaft.
I was only able to find one marking on the rearend, ML918.
The trans is a four speed, but outside that I was unable to verify anything. It is a very short box and it has a full cast iron bell housing.
The motor, as I said before is not original, but the side of the block has "348675 GM" cast on it in raised letters
