292 I6 Engine Roll Around Engine Cradle ?

[aotte1]

Looking for source / example of 292 I6 engine roll around cradle/stand. Used for storage of engine and has casters for rolling engine around. See them all over for SBC's. In past have made cradle out of 2x10s in shape where oil pan rail rests on top of rectangle made from 2x10s w/ dip stick , etc. notched in top of boards.
Would add two additional end boards boards that extended beyond triangle for strength and stability. Works however really like the roll around ones.

How is everybody storing their 292s??
Les