If you are interested, I have a water-to-air intercooler for sale at the right price. Purchased to go on a vehicle which has since been sold. The advantages are:
1/ MUCH shorter intake path - therefore better throttle response & reduced lag ( see the pic of SR20 motor).
2/ more efficient for its given size
3/ very stable temps regardless of atmospheric or underbonnet conditions.
4/ invisible to Mr. Plod
5/ can be located out of the airstream.
The con is: requires ancillaries (pump, small radiator, switching mechanism)
Preferrred by the rotary crowd or where space is at a premium.
Hope this adds, etc.