Thanks everyone for your responses.

The reason I need to weld brackets on the Stebro muffler is that the
original brackets broke and Stebro sent me me replacement brackets under
warranty. I mistakenly thought it would be quicker to have them send me the
brackets and find someone to weld them to the muffler than to send the
muffler back to Stebro in Canada. I should have just sent it back for
repairs, that's probably what I'll do now as it seems I will have a
difficult time finding a local shop to do the job properly.

-Mark