You guys really need to hit up the Forced induction forum at Focaljet.com. Those guys over there are running a lot of turbo kits. Aerocharger, Gude, F-max, Alamo, and quite a few other custom setups. They have really been addressing subject you are on right now. One guy is running around 245 to 270fwhp or so with his set up.. I think its somewhere around there.
Plus, Im sure Terry knows whats up.. Most of the guys over on the JET are running the Aerocharger with 200fwhp all day long, without lowering compression. They have been addressing the computer/fuel/air issues to cure detonation.