Motor Dolly suggestions

I made some engine dollies out of angle and 1" box tube...with a welder, a little scrap steel, and 4 wheels (I scrounged somewhere). I'd offer you a picture but the one I have left is buried in the corner behind my wife's mustang, under a 318 with the interior out of two darts stacked on top. Pretty much a rectangle with 4 wheels and bars going up to the motor mounts.