seems like most are thinking not to lift from the spacer/adapter.

My reason of thinking about this was for between round engine swaps. I was thinking off having a carb / engine lift plate already bolted to my spare engine. I figure it might save a few minutes in an engine swap taking place at the racetrack I didn't have to unbolt carb adapters on the broken engine nor on the spare engine. And yes, I have swapped between rounds once- broke an engine in the first time trial at one of the 'small' races during million $$ bracket races so there were hours of time available to get the swap done.