Water/Alcohol Injection for Road Racing?

[tgentry]

I'm looking into either a chemical or air/air intercooler for my Mustang Cobra, 4.6L, DOHC, Vortech S-Trim. The current tune is intentionally very fuel rich to guard against detonation. It's currently making about 475rwhp @ 15psi, and I'm hoping to cool the intake charge, lean out the fuel a bit and gain some horsepower.

Since this car sees hard road course sessions of 20-30 min. I'm a little worried about the duty cycle of the pump. Obviously water/alc injection would be much easier to package, and possibly more effective than an air/air intercooler.

Any thoughts or advice will be greatly appreciated.