Craig,
You took the words right out of my mouth. Wolffman, take a look at the "Anyone working on a Harrier" thread and "High Bypass Turbofan Engine" thread to get an indication of the high level of technical expertise that prevails in this forum.

Wolffman, out of curiosity - what sized engines would you be looking at for a twin application in the Eurofighter, and why twin vs. single for what you are doing? Giving a bit more info like this may help people provide you with a useful recommendation.