picked up a brand new 450 today!!! world different than the ol 426 i need to get a sparky for trail riding. i torn between a PMB end cap or just setup a complete exhaust system thinking about the dr d i would like to get something that adds to the low end. most of my riding is done in the low-mid area i know the 08s def need an exhaust but how bout the 07? before i drop 500 bones on the dr d i want to make sure its a good investment i would hate having buyers remorse. Also does anyone know if the megabomb fit the stock can?