I did just see that SOS has a very large front heat exchanger that is compatible with the vortech among others. This thing is about the size of some FMIC's. SOS says its 360% more area and volume. In theory the extra cooling this allows may let you run a 50/50 mix and still achieve proper heat dispersion and still maintain a freeze safe water ratio.

http://www.scienceofspeed.com/produc...anger_upgrade/
Pic of heat exchanger, no that is not an intercooler.