Yes you are correct on the sizing. I actually just ordered a aero turbine 3535 for my truck, going to install it with stock 3.5" dmax piping I got for free, dumped over the axle with a 5x15" tip.
As soon as it gets here in a day or two I'm super excited to get it all installed...
Scarber08: why did you not like it dumped with a 5" tip? I thought it sounded awesome in your video above for bassmaster... I really like the sound of like a corsa exhaust on a vette or mustang, and want something sporty like that, so that's why I bought the aero. My truck is lifted 5.3 though, and I'm going to be using larger pipe so I'm hoping it sounds the way I want it to. I had a fm40 when I bought the truck, droned like crazy, so I put a cbe, but it's too quiet at operating temps, so that's why I'm changing it up...