The Stovebolt Site Forums The Shop Area The HiPo Shop Anybody build a dolly to roll their cab around on?

I was working on building a cab dolly today. I made a frame that bolted to the 4 cab mount locations. I was thinking of making it so I could tilt it towards the firewall and roll it around that way as well, so the back of the cab is up, making it easier to work on underneath. What I'm not sure of is how long to make the legs. If the cab is too low it will be hard to work on...too high might not be good either. Anybody have any experience with this?