trans support w/engine out -- unistrut bracket

The engine is out of my 01 wj, & the 42re supported on jack stand. I'd like to support the trans so the wj can be rolled around or towed. I was thinking of making a bracket the attached to the 42re housing then reached up to the motor mount bolts. Should be fairly straight forward with unistrut sections.
IS there a common method used for support a trans when the engine is out to allow rolling the car?
Am I nuts with the idea?

Thanks for any ideas

trans support w/engine out -- unistrut bracket