I had to cut 6 holes in the side of the frame. I went to tractor supply and bought 6 grade 8 bolts, nuts and washers. Reinstall the plate with the new bolts and nuts (nut and washer in the frame) Weld the nut to the washer and the washer to the frame. then you have 6 new nut inserts. Then just reweld the holes you cut into the frame back into place.
This is also a good time for a good coat of POR15 on the frame.