Why not just run your Air Conditioning system to the intercooler (new intercooler element would be needed as well as a bunch of plumbing changes).

Some basic discussion can be found here.

I personally like the option of an AC chilled glycol solution in the intercooler system (separate from the engine cooling system) similar to Ford's Lightning prototype.

More plumbing, but it could be done... Also depends upon your application. If you are going to race on a 1/4 mile track, you can simply pre-chill your intercooler solution. If you want this for instant street power or a road course... you will need to have some way to chill the solution during off WOT so as not to rob the engine of power.

Cheers!