Get the Cobra
I had a 1999 GT with all the mods making 401hp 402TQ at the wheels. The local dyno shop had many Saleen owners and their #'s posted. Most from Saleen come with about 335 to 340 at the wheels with the supercharger. I disagree with some, I do think they (Saleens) are good looking, it's just NO comparison to an 03/04 Cobra. I now have an 03 Cobra and cannot beleive what a POS my GT was. I payed $25,000 for it new in 99 put $25,000 more into it and got my ass kicked by an 03 Cobra with a $700 upgrade (pulley and chip).
Sorry to ramble. Bottom line, SVT screwed all tuners with the Cobra, it is the pinacle of what you could due with that chassis and no Saleen or Roush or Hyland or Steeda will compare.
Dark Shadow Grey
'03 Cobra 455rwhp / 483rwtq