Good idea, as it's a huge job to restore such a machine. It is a solid looking truck and a worthy project! Quite a rise to load GT's onto, as you don't want much tilt to the bed at all while loading. Best to build a long long ramp. Now if you had a hydraulic liftgate.......!!
Personally, I if I had a place to, I would make a dirt pile loading ramp. Back the truck up to it or drive along side of it and then drive the tractor up the pile. I do not like ramps at all, I'm not trusting of them at all and thats quite a high fall on a tractor.