I have a 96, with what you have plus some.(except 3:73's) And mine dynoed at 411. Cold air, 65mm throttle body, total exhaust change, pullys, tuned, and a small shot of NOS. Stock
trans with King Cobra clutch and it holds up fine. Granted im not constantly nailing it or race it very much, but I do play from time to time. So it is possible without a supercharger. I would rather have one but really dont want to drop the kinda cash it would take to do it right. Plus the car is 12yrs old with 106,000 on it. But if I were to get one it would be a Whipple or Kenny Bell. I understand your attachment, but im with Tripleblack the 03-04 is a much better starting point. I have some buddys who have them and damn, they are just bad ass. I cant do anything with them, it just kinda discouraging. Oh well I think im done, good luck.