gotta love the pooch!
I realy like you build and truck. It reminds me of my 76. I don't know if you got your tire carrier figured out or not, but I used an old 8 lug axle shaft, 3/8 inch plate and some 1" angle. I wanted my tire to be at an angle like a throphy truck, so I cut the axle shaft to the height I wanted with about 70* angle cut,welded it to the 3/8 plate, added 4 braces made out of the 1" angle iron. Then bolted the plate down to 2 bed crossmembers. I bolted the tire down with 8 lug nuts on the correct studs for my truck. That way you always have extra lug nuts and wheel studs if you need them.
I like this idea too. You wouldn't happen to have a picture of your setup would you?

Yeah, spray it with penetrating fluid, and then work it back and forth with a LINE WRENCH.
Or just do like every old grain truck in the country and throw a gallon jug of brake fluid behind the drivers seat......
Martin

Yeah it looks like it. Its the wettest by the right hand line. I don't have a line wrench. I suppose I can go buy one though.