I don't recall if that's mounted on a double-walled portion or not. If not, take off the back pad and drill the spots from there. Use the holes to rosette weld the new one on. Reinstall the back pad and zoom-zoom.
If it is mounted on a double-walled portion then the only way would be to drill through the piece itself (which is about twice as thick). I would then drill a couple of holes in the new piece and rosette weld it. I think it comes out a little neater that way. For pure functionality you could weld around the edges as well... either way works as long as you get penetration.
You could also use a carbide cut-off wheel on a Dremel. Those little suckers rock and, they're small enough that they can be easily handled.
(Good one Britt
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