Hey dj, where are you located? I'm guessing I could do another one for $150 or so, but it would be a few weeks before I could do it.
50dro - From what I understand, this is almost the same thing. According to the "exhaust shootout" write-up on ASB, they basically gut the core then line the chamber with packing material.
To be honest, thier fit and finish will be better than mine for sure, they've obviously had a lot more experience doing this than I have when it comes to welding/brazing it back together. I've only done one muffler (mine), but learned a lot along the way.
If I did another, I would probably use Tattoo's suggestion of perforated stainless plate to hold the packing material instead of the mesh, and probably use rockwool instead of stainless fiber. I think in the long run it would hold up better, but the sound would still be about the same.
-Tim