Searched but couldn't find much on the subject. I have a couple of carts that got run over that the local dollar store gave me, but not sure how to cut them for small block eng. movers.
Old shopping carts are all I use for my engine and gearboxes. I have a LOT of flatheads and find that with a bit of thinking and welding, they make perfect mobile carts. Give it a try. And, why not post a few photos and some info on your projects, cars, trucks?