RX8Club.com - Exhaust and Rims Opinion Help

Hello everyone!

I am new to the community in terms of making a profile and posting, but I will say I have been following it for about two years. I was hoping I could get some opinions and expert advice on some changes I will be making here with in the next month.

A little about me and the car. I have had the Car for about a year and a half now. It is a 2004 AT (Wanted manual, but unfortunately, this was too good of a deal to pass up!) It has 10k on the engine! Due to it not being a manual, I see no real need to really try to milk HP out of it and try to make it faster. Its a sports car and I like it the way it is. Maybe in the future I will buy a manual for more... fun. :yelrotflm

Exhaust:
I will say I love the smooth sound of the rotary! However, I would desire a little bit more of an aggressive sound when I get on the gas. I have read a few threads, and the last thing I want to do is take away any TRQ or HP. From what I understand the Mazdaspeed dual exhaust is pretty good. It is lighter, faster, and has what seems like a decent sound... Not sure how much i trust the accuracy of a mic on a video though.

Is the MS a good exhaust? Or is there something else that would be better?

Also when it comes to the intake, I have been thinking about the:

MS Cold Air Intake System
Injen SP Series Short Ram Intake System
Rotary Extreme Intake System (No sure where to get this one though, have read good things however)

I haven't seen these three compared and I am also late coming into the RX8 scene! Does the Injen and RE provide the same sort of results as the MS? I worry that buying the wrong Intake can take away performance. Would anyone recommend the Injen SR?

Wheels:
When I bought the car it already had 18" Konig Unknown rims on it.. I am not a fan of these by any means. The car has stock suspension, brakes, and rotors.
The other question I have is my wheels.

I am looking at the TSW Nirburgring Rims and NITTO - NT05 Tires:
Rims: | Tires:
Front: 18"x 8.5" | 245/40ZR 18W
Rear: 18" x 9.5" | 275/35ZR 18W

Will this set up work fine with the car? or will it require modifications to be made with the fender? If not, what set up would you suggest? Also think Bronze will look good on my brilliant black rx8? wish i could try the rims on like shoes haha!

http://www.carid.com/images/tsw/whee...tte-bronze.jpg

Thank you for any help in advance and I apologize for my noob-ness.