I have an '06 4.0 ranger 4x4 ext. cab. I am working out of state, and my ranger is not with me. I'm looking at exhaust parts online, but since I can't crawl under my truck to look at the exhaust i have the following questions: If memory serves, there is a flange on the exhaust after the cats, before the muffler. I think at the flange the diameter of the pipe changes from 3in to 2.5in. So here's what I have in mind, I want to install a Flowmaster 943044 - 40 Series Delta Flow Muffler. This is a 3 inch offset inlet / 3.00 same side out muffler. I would like to install a flange between the cats and the muffler, and another flange after the muffler, with a flanged turn down. Will I need 3 flanges, or just two? I'm not sure if I can make use of the flange closest to the cats, or do I need to cut that off and replace it to maintain a 3 inch inside diameter? I plan to stand the muffler up on it's side long ways, rather than lay it flat. I've attached pics of the parts I have in mind. Any advise/suggestions would be appreciated. I have future plans of installing a cold air intake and an Eaton M90 supercharger.