Welcome to the message board. As for a a water to air intercooler…Im guessing that you mean that you want a bigger front mount…correct?
I own a '97 GP thats Supercharged and intercooled. So, we have that in common. I run a HUGE front mount radiator. Its actually a radiator for cooling an engine. 
It makes the Cobra front mount look tiny. It might be overkill but for a car thats driven alot on the streets, bigger is usually better. The more surface area the liquid can go across and be cooled, the better.