Well, those mods arent going to do much for you, the mods you have, might give you 10 hp. They just did a dyno test of a 2gnt in import tuner with exhaust, intake, and header and went from a whopping 114hp (or something close to that) to like 117hp (or something close to that). We're talking like 3-5 hp with all that stuff. I wouldnt waist my money until theres a turbo under the hood. Then get the turbo with a turbo intake, new headers, and bigger exhaust, then you'll get the hp out of the exhaust mods, not to mention lots of hp from the turbo. A UDP would probably be worth it though. I would imagine that would help.
1998 Mitsubishi Eclipse GS-T Evo Front Bumper (no pics yet) Projector Headlights Clear Corners Stereo System -Alpine Deck -2 JL 10" Subs -Phoenix Gold XS2300 Amp -Custom Fit Box Viper Alarm