I'm looking for a catback flowmaster kit and I want a super 44 kit but all I can find are the 50 series kits for my truck. Any one know of a website that would have a 44 or any 40 series catback kit for an '01 supercrew 5.4? Thanks.

 

You could get one of the aluminized crimp bent kits on ebay, or do it the better way & supply a Super 44 and tip(s) to your exhaust shop and have them smooth bend you a cat-back. May cost $100 or so more but its worth it, especially for the exhaust shop's warranty.

 

whats the differences in the 50 44 and 40?

 

50 Series = 3 chamber, available in Delta Flow, Big Block, and SUV versions ( loudness levels, delta being the loudest ) with a 4x9.75x17" body.

Super 44 = 2 chamber, based on designs of the Original 40, contains 2 baffles in center chamber, is the deepest and loudest 2 chamber they offer, 4x9.75x13 case.

40 Series = Delta Flow design, 3 baffle plates in center chamber, 4x9.75x13 case. Not as good flowing as the Super 44.