That does look like a nice setup. I was envisioning something that would bolt on to the plate on the engine stand, but replacing the whole rotating tube section is even better. Don't know, but it implies it would work on ANY GM engine, which would be nice. As far as storing the adapter, that's nearly a non-issue, as it would just stay in place on the stand. You could turn your old rotating tube assembly into a holder for welding rods, or whatever.