Jason,
I don't have a video of it running. As noted in the first post, it's new and never been run. In general, Monty mufflers are probably the least prone to droning of all of the 2-in, 2-out mufflers. I can't compare it to the sound of an M&K, so I have no idea if it would be more or less quiet than what you have. In general, a two outlet muffler is more sporting in nature than a single outlet muffler.
You can get some idea of the details on their website:
Monty Mufflers - porsche mufflers stainless steel australia USA - hand, fabricated, heavy, gauge, 304, flanges
What I am selling is an M52. They are hand made, to order. As far as I know, nobody in the US stocks the one I am selling. Pelican sells a single-outlet version.
JR