[19GMC63]

Sweet truck.....

I say slam it, put some steelies w/ wide whites, and leave the paint alone.
If its gonna be a DD, I'd throw all the nice modern conveniences in it... tranny, stereo, ect, but leave that body alone, it has tons of character.

I'd also try and find a junky lookin white rear bumper to match the front.

Good luck, looks like its in great shape.