First let me start out by saying that I just sold my Supercharged 1999 Mustang GT. It was reliable and had 480 RWHP. I had no intention of selling it but once I got my RX-8 I found it to be a much better all around sports car and also more practical with the rear half doors. The handling of the Shinka is out of this world (especially compared to the Mustang), especially on the Shinka edition. With that said I decided to sell my Mustang and now find myself needing more power from my RX-8. I really need some guidance from a Rotary gear head on how to reliably improve the performance of the rotary. I see there are intakes from S & M and the REVi, which is better? Are underdrive pullies worth the money? What exhaust system is the ideal choice? Are there computer modifications out there? Supercharge or Turbo? Are there any professional tuners located in the Detroit Michigan area? Any and all advice/recommendations are appreciated.