Thanks so much for all the great support! I managed to piece together the build sheet that was tucked under the springs behind the seat. I believe Maynard has the 305E but how do I tell if he has the Powerglide or Turbo you mention?
https://6066gmcclub.com/picture.php?...pictureid=4524
The inside cab took a great deal of sanding and prep - I believe my hand went numb from the orbital - lol. I still need to work on the doors. Rust-oleum universal metallic paint and primer in one - color Champagne Mist. Looks really nice with the original bench seat.