[zeldman]

Whatever you do, go with 2 1/2 inch exhaust, or even 3 inch. 2 1/2 inch wont cost any more that 2 1/4, but the sound is great and your engine will thank you for letting it breath at cruising rpm, which means gas mileage if you can keep your foot out of it. 3 inch is better but the cost goes up quickly. At least put a crossover pipe between the two, and X pipe will work and sound better. I use 2 1/2 on my 6 cylinder.

I know you didnt ask, but I prefer Magnaflo over FloMaster for better sound and performance.