I had the hks rep before i got the motordyne, it was a pretty solid exhaust. Had zero problems with it, the fitment on the right tip was a little off to the right though maybe a half inch but nothing too noticeable.
Godspeed and x02 are your best bet for that type of exhaust. $480
http://www.godspeedperformance.com/2003 ... 45548.html
My best suggestion is to buy the topspeed titanium 4.5 tips for it though. The s*** attempt at a burn tip that these come in are horrendous.
If your're just looking to lower your car and coilovers are something you have decided on you might just want to go with something like k-sport, or stance.