Thanks for the info. I agree that the center of gravity is going to be high. Ideally, the cart would be closer to the ground with wheels on the outside as opposed it underneath but I'm not equipped to build one out of steel, so I picked up one of the mentioned carts yesterday. I like the wooden support Jason posted. Something like that would make it more stable but it does raise it higher.
I have one of those red motor cradles. As a matter of fact, that's what my 350 is sitting in but like you said, it wouldn't roll on gravel. Its tough enough rolling on concrete. One little grain of sand and it gets stuck!
Like Brandon said, I'll have to be careful moving it around and likely have to have one person pulling and another pushing.
