I get what you're saying and could grind it away on the bedsides I am replacing but grinding the back side of the spot welds on the donor inner wheel wells seems kind of impossible. The back side of the top lip where the bed wraps around to the inside of the bed... Those are almost gonna all have to be drilled out.
And we had other reasons to be in Georgia around that time, made a mini vacation and 30th wedding anniversary trip out of the run down for truck parts. Unfortunately my trailer wasn't big enough, this guy had a nice bed he was wanting out of his yard for my 99 Dakota daily driver I did come home with a much Fuller trailer than I expected to as it was.