Deve
Nice reading I started to build something like this but found my HF stand pipe was not standard and easy to find the pipe to fit.
But after digging in my shed I found a old NAPA stand with a different pipe size. Only issue there is it is a 750lb stand though it does have a cross tee on the front roller. I always worry on a I6 on engine stands with so much long weight.
With seeing your photos and such I think it is time to pull out the plasma cutter and start making a plate.
Ron