msp, i just got off the phone with chris from blow by racing, as i was planning on testing their side exhaust on my car, however as the side skirts are around $600 alone, i decided not to. i told him what i was planning to do, he said hed heard a v6 with flowmasters, and he said he thought the problem with that is that it didnt have enough backpressure. he thought that running 2.25" pipe instead of 2.5" pipe would add some backpressure, which would add torque, power, and stop the popping, and make it sound a lot meaner. he was saying that with dual 2.25 you would still flow better, but he thought the v6 wasnt making enough air to really fill out the exhaust system, he said if I was planning on putting the procharger on (which they are working on by the way) 2.5 would be fine, but he felt that for stock and even a CAI n tune, 2.25 would create a more ideal amount of backpressure for the 4.0 engine. what do you think?