Well, Photobucket is being persnickety this evening so here is the link to the video on Flickr.
https://www.flickr.com/photos/21499296@N08/15516895601/
A bit lower tone at idle, loud on WOT, and not much different from stock while cruising.
I broke out the crummy Campbell-Hausfeld flux core welder this morning and made 'one-off' brackets for each of the mounting points. The mounting is rigid. I didn't need to modify the H-box at all, just removed the graphite seal and used standard muffler clamps that are hidden behind the heat shield. It was the mounting that was the PITA. I also drew blood a couple times, so I must have done something right.