[gumby79]

You can dual-core the IC as well...
Or even 2 stage with standard IC primary (reduced size) and a temperature controlled water to air secondary like this .

Description
This is an enormous water to air intercooler.

The proportions are somewhat ridiculous, please make sure it will fit before ordering. If you have the room, there's nothing better.

The height, its smallest dimension, is nine inches. This intercooler is more than five times larger than our smallest core. Recommended for up to two thousand horsepower.

100% Lightweight aluminum, No Epoxy Used In Core

Fin pitch is 21 fins/inch - 12.5 air side and 8.5 water side.

Recommended for up to 2500 CFM / 2000 HP
Pressure Drop: Less than 0.5 PSI. This is not a typo! Liquid/Air Intercoolers have incredibly low pressure drop.
Inlet: 4" Outlet: 4"
Maximum water/air pressure: 70 PSI
Core Size: 9.5"x9"x9" (Endtanks add to length)
From:allpurposepipes.com
Water to Air intercoolers

I have been looking at theas
They appear to have the capacity to build any custom setup you may desire. Tie into the block (like the heater core)to aid in cold weather conditions by maintaining higher IAT +20°f . Warm up time reduction. (times required to rach high efficiency)by feeding warm/ hot air into the intake. And a supplemental radiator to keep IAT low enough.

As per cummins any IAT above 90f will reduce power at a rate of 1%per 10°f above 90f and burn the same fuel. https://drive.google.com/file/d/0B0l...p=docslist_api

Call a Cummins "Applications Engineer Technician " to get a specific temperature window recommendation for there ISX with your specific build and planned computer reprogramming.

With the volume of engines you are buying and retrofitting they may even send a tech to modify there engine to fit your needs.