I have the Ultra Q on mine and had to drill two holes in the bulkhead. The one hole in the back for the bolt and the hole in the front for the spring. Took 5 minutes to install and its rock solid. Nice sound as well.
I know it's kinda apples to oranges, but a friend of mine just put a Super Q on his brand new RMK 144 and it sounds GREAT! I still think MBRP makes the best, but after seeing his in aciton, Super Q is a GREAT can. Two thumbs up!
