"IntraCooler"
Ford (SVT) has developed a new system such as you have described that adds 35-50 hp, depending on ambient temps, for use with their next Supercharged models.
You might contact SVT for their in depth data & description of the
system. I read it around 2 weeks ago from an Autoweek link that gave me the 8-pg file on Adobe, but have since deleted it.
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The IntraCooler is another, earlier aftermarket system.
http://www.coolflow.com/prod1.htm <---link
There was at least 1 person that posted on this board that said he had one, and it was working quite well.
This particular company had internal probs unrelated to their product, & have not answered any e-mails in over a year at the address given.
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I think it is the logical dual-use of the A/C system on intercooled vehicles, & it looks like Ford has taken the lead on its development & usage.
Wish we could buy one for our TRs today!
HTH