--If you are running 6.5's coax up front, you shoud try to re-plug your factory tweeter. It may help. If it don't make a big enough differance try chainging the little cacacitor (6 dB cross-over directly soldered to the + terminal) of the factory tweeter for a 10-15 mF capacitor. It's not 100% hi-fi but it help.
--By the way it's not a real tweeter, it's more like a mid-hi 12 ohms speaker.

95 Talon ESI
Mod: Custom Turbo
Modified T3 turbo on custom manifold
4 extras injectors
SDS auxiliary injectors controller
Modified 1G side mount Intercooler
Custom stainles Steel IC pip