Okay. Later is squarebody. Lotsa folks round here is confused then.
As for tucking. I ain't if I don't have to. Measured the tank out of the box. Its 13" deep. Same distance as the bottom of the large crossmember to the bottom of the spare tire. So, it shouldn't hang down too low...in fact it'll be a bit better clearance since the tire carrier will be gone.
Neck might be an issue....its pretty close to the location of that bed sill. If the neck clears the frame rail and the cross sill on initial installation I can put my mental energies in to deciding where and how to mount the filler neck. Though I'm thinkin simple 65 C10 filler neck in the fender with cab style grommet for a factory kind of look.
