Nice design and work. From a structural perspective, I would have liked to seen a bar on the backside that ties the upper vertical area to the end of the horizontal area. With the weight of the tire and that much leverage hanging out there, I can see the potential of that bending/failing at some point. I do tend to overbuild things but almost never have had failures of anything I have built. YMMV
Tires always makes these things go from mmmm... to I WANT ONE!!! 7.3L in this beast too!!! want a trade?!