What's the best cheap engine stand for a slant six?

You said just to store, so do you really need a stand at this time? Maybe just some 2x4 and casters if you're just keeping it around. I really don't undertand why anyone would want a 3 legged, just too unstable especially moving it around. I had a 2.2 on one and it was very unstable. I've got a U shapped 4 wheeled one an it's very stable even pushing it around. Craigslist, FB marketplace has some good deals if you don't need it today.