We 99-01 Cobra owners are in the same boat. All I have done to my 99 (by way of hp gainers) is a BBK throttle body, C&L True Flow pipe, C&L cold air, Steeda under drives, MAC 3" catback, Dynomax 2 1/2" x-pipe and a SCT tuner. I dyno'd last at 315rwhp. Now the Hellion kit I bought, should put me around 500rwhp, but then the bottom end will be getting dangerous.
Full exhaust (LT headers, Mid Pipe, Catback), a stage 1 cam (comp 262), Steeda U/D pulleys, 75mm TB, Plenum and a 93 Oct tune. Those mods should put you around 300 rwhp.
$2150 for their Stage 2 1/2 heads
$595 for VT custom billet cams
$200.99 for Dr.Gas x-pipe
$480 for BBK ceramic coated longtubes
$205 for JLT intake
$429.99 for Dragon Plenum and 75mm TB
$2150 for their Stage 2 1/2 heads
$595 for VT custom billet cams
$200.99 for Dr.Gas x-pipe
$480 for BBK ceramic coated longtubes
$205 for JLT intake
$429.99 for Dragon Plenum and 75mm TB
you can cut $205 off that since he doesn't mention a CAi and it's worthless anyway - making that total under the $3900. But that 3900 is such a steal with the $399 x-call II and tune included.