well, with the risk of sounding very stupid, i have an idea...
I come from the vortex and audi forums and they seem to love this thing called water/meth injection. You just port your intake manifolds with as many nozzles as you need and the methanol and the water are very cheap. The water absobs a lot of heat and the methanol increases octane level.
of course they were running at least 20psi on small 1.8/2.0L engines and I guess that's why you people never mentioned it... But it could be a good idea for the SRT-6 owners with pulleys who are boosting 20 psi..