Big Exhaust Install

Install went well, and took about 4 hours including installing the Banks Brake. If you want to do a brake with your Big Exhaust use the Banks. The outlet is available in a 4" configuration, and comes with a 4" down-pipe. The 5" system (without a ex-brake) comes out of the turbo at 3", steps up to a 4" for the duration of the down-pipe, then to 5" after the bend under the truck and the transition to straight pipe.
Using the Donaldson M090535 muffler was as straight-forward as you can get. You will need to move the hanger from the stock position on the frame forward to just behind where the box welded frame section goes to open channel frame. There are holes already there.
When using the bigger Donaldson ($72. 50 local truck shop) you won't need the long 5" pipe section (5 footer), and with the Banks brake, you won't need the down-pipe supplied with the 5" system either.
A Sawzall is a must. A single cut about 18" ahead of the resonator will allow removal of the entire stock system. Slide tailpipe straight into muffler, and work forward from there. Chrome downturn exhaust tip supplied by Big Exhaust was way too long, but modified well. (cut and weld)
Talk to Anthony at Big Exhaust. He put me onto a great package deal, (Banks Brake, and 5" muffless) and is excellent to work with. Exhaust note is only slightly louder than stock under normal operation, but is deeper and throaty under hard acceleration. Be aware of possible clearance issues with underbed type hidden gooseneck hitch set-ups.
Overall, very happy!! Giant sewerpipe gets some looks, fer sure!Oo. Oo. Oo. Oo. Oo. Oo.