I wonder who would do such a thing!!Well I made a decision and went with it.
View attachment 148928
Someone welded a shelf right in the way… I will only be able to weld the inside on 3 of the 4 walls. Should be fine.

I doubt you'll have any issues, but as you mentioned earlier, it would be easy to add gussets to the receiver tube if needed. I added three gussets to support the 3" square tube when I made a receiver for the M1078. The angled gussets provide vertical and horizontal support.
								
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