Couple other thoughts Larry, owing to your post requesting plans, if you want to make something you might consider making a ZF Dolly. I can tell you the engine/zf coupled together take up a lot shop/garage space and it only takes 10 minutes to split them once they're out of the car.
I sort of gave up on making custom stands for stuff and have a half dozen pallets and storage boxes I put on casters so they can be moved a round the shop easily. The tote is dedicated ZF storage now but even it could be easily re-commissioned to other use. It has a couple cleats for forking on the bottom the casters attach to and when they come off it's a reusable shipping container.
Best,
K
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