The intercooler isn't the front mounted heat exchanger. The intercooler uses that plus a smaller "radiator" mounted between the blower and lower intake housing.
Where do you think that the coolant in the AFCO that you are pumping is going to go?
You can see the intercooler itself in this picture of the lower housing (the blower is upside down on the work bench):
If all you get is the AFCO heat exchanger to mount in front of the bumper, the pump, the coolant reservoir, and the hoses - you have no where to run the coolant to.
---------- Post added at 11:06 PM ---------- Previous post was at 11:03 PM ----------
The upgrade uses the heat exchanger and a new lower intake that has been modified for the intercooler, and a new lid with the intercooler mounted in it. There are a few other modifications too that are needed to accommodate the set up.