Muffler support pan fix
 

I had a cracked muffler support pan that is held by the head bolt. I used a Dremmel to grove a little past the cracks then fill welded. Before welding the crack, I backed up the plate with a 1/4" x 2" plate underneath, clamped on each side of the crack to make sure it stays straight. Used a grinder to smooth it out, then welded a large grade 8, 3/8" washer on the whole for the head bolt. I put a bolt through and washer underneath to line it up and make sure the welded washer was tight to the plate.