When Denny, 7982X, shipped me a 1500 a while back, he made a stand for the motor to sit on inside the crate:
My original plan was to get a more conventional stand, but after I got Denny's creation on top of my work bench with the motor, I could see it had some advantages. Since I did not need to do anything on the bottom end that would require flipping the motor over, a conventional stand offered little advantage. When I did need to get in there, I just hoisted the motor up a bit, and slid the stand out of the way.
One of the things I wanted to do was thoroughly inspect the motor before building it up and putting it in the car since neither of us knew the detailed history of the motor other than the mileage on the car it came out of and that it was running fine when removed. After visual inspection of the top and bottom end, I wanted to do a compression test. This required a starter motor which required a transaxle. I make some mods to Denny's design so that the transaxle could be mounted and the starter installed.
After a successful compression test, I built up the motor. It then became clear that I could easily turn this contraption into an engine run stand and test the new engine before installation:
Here is a short video of the thing in operation:
http://www.leahlubin.com/archive/1500_First_Start_2018_01_11.mp4
The other convenient feature of this stand is that I just lowered the whole thing on to a dolly, rolled it under the car, hoisted the motor up, and it was in.