Fred's requirments for a engine stand is very much different than most of you all, his need a stable engine dolly to transport a engine, not roll it around in the garage floor. I know exactly what he needs, I built dozens of them, and know exactly what to make and what metals to use. Fred, this ain't my first rodeo :), I got you covered bud. We''l built this together, and then all your questions will be answered.
Club racers are nomads, and the stuff they build to mount stuff to has to be made to travel and travel safely, a totally different world from the guys making toys to stay in their garage, castors are a big no no for example unless you want you engine dolly to become a wrecking ball inside your trailer. Over the years we made transportable engine dollies, transmision dollies, diff containers all designed with travel in mind. Remember guys, racing is a traveling show, tha garage is only a storage facilty. :) Think about how you would prepare yourself to change a engine in a parking lot a couple hundred miles from home, not your garage, and then you have now entered the world of a club racer.