I have a 3 leg stand that I use on the V-8's and I also have made out riggers for the stand that can be bolted on the back section and the front section has a small 12" cross piece that can be bolted to it also. If I build another stand I will incorperate a slide out center leg with pins and 2 wheels 16" wide for extra safety. I had a simlar expericence with a Chevy 6 rolling over but was lucky I still had the engine hoist attached. That could of gotten messy too. My engine stand is built out of 21/2" sq. tubing 1/4" thick and the mounting bars are of keystock 5/8" sq. all bolts are grade 8. It's better to be safe than sorry. The Cheery picker I use is made out of 3" sq. 3/8" thick tubing all the away around and I have picked up some heavy engines and other things with it. It comes apart but does not fold up. This is my friends picker he used a 12 ton jack on it. That is a little overkill but it works.
62Blue.
Don

62Blue
62Chevy in progress
You've never been lost until you've been lost at Mach3" Paul F Crichmore (Test Pilot)