Ok found it.....
MagnaFlow Exhaust Products - For Trucks, Suv's, American Muscle, Diesel, & Sport Compact Vehicles
My set-up in those vids are just the muffler, I don't have my other mods on yet. On Magnaflow's site, in the universal section, there's a muffler called Magnapack and it's just a round body tube shape. They only show the name on one section of muffler's but all the ones listed below it, that look like it, are Magnapack's as well......I called and confirmed this when I bought mine. I have the 3in/ single 3out, 4" around, 14" body and 22" total length. Magnaflow also told me that the shorter or smaller body you go, the louder it gets. I feel mine is juuuuust right. The glasspack's they offer are similar but not the same, even though they look like the Magnapack. My stock muffler was cut out and the Magnapack welded in it's place.....that way, it's the stock tubing and mounting point towards the front where it connects to the y-pipe.
Also, I found mine for way cheaper online through Summit, think I paid just over $100.