V6 motor mount ? saginaw steering

I have a 71 frame that I'm getting ready to sandblast and I went to take off the drivers side motor mount bracket because I saw it was being held on with 4 bolts, but as I took the bolts out, I see that the bracket was welded in but the top weld failed and the bracket must have shifted and someone redrilled the holes in the bracket to bolt it on.
Is this bracket supposed to be just bolted on?
This is the drivers side motor mount bracket for the 225 with saginaw steering.

 

i took that same part off a junk commando to use on a 67 cj i converted to saginaw steering. it was only bolted to the frame, had no signs of ever had been welded on.

 

is the saginaw steering a add on? the motormounts should be welded from the factory i believe. at least mine are.

 

on my 67 cj 5 they are welded in as was on the other 67 cj5. on the commando i took the mount off of, the passenger frame mount was welded on but the drivers side was only bolted on.

 

Drivers side tack welded then bolted although I have found they got a little carried away with the welding on some . Should mention I have seen some that were not welded either.