Engine Test Stand using K member?

If I used my k frame I would have to be able to lift the engine, k frame and tranny as a unit and drop it on a cart to roll under the car for installation. I know some of the k frame carts are too high making it tough to slide under a car unless its on a 2 post lift. All I am accomplishing with this idea is the elimination of motor mount support fabrication which would take a bit of work. I've got enough to do.
Well look why not kill it all in one take? Build a K frame dolly and they are just not that hard, to do an install, and USE it pretty much as is to run the engine?

I threw one together and built it with short "fake" hitch receiver type construction, so it all comes apart Somewhere on here I had a thread about it. My situation is a bit different, because I have an (outdoor!!) 2 post, so the dolly in my case can be quite high, but smaller casters etc, can "fix" that.........

(Found the thread, it's "dead" "Thanks" to photophucket.............)