Don't be saddened if no "significant" gains by just adding the HX. It will, however, allow you to run more efficiently, and it'll keep the car much cooler, thus making the peak power through more abuse (increased operating temps are now not so much of a power robber). Check out some RedLine Water Wetter, throw that in the IC Reservoir. Also, there is an easy way to hardwire the IC Reservoir, to where it no longer runs only when the car is on/heated up. I had mine on a remotely mounted switch, that allowed me to keep the pump, pumping water through the IC, while the car was off - and I was out talking smack, attempting to catch another race for us, lol...

Installed HX looks dead sexy. Miss my '03 Cobra badddd.

Josh