Oh wow! Now I am officially jealous. You own a BOSS and a Shelby!!! I'm guessing your next one will be a Super Snake. :)
I'm on my third Mustang, '09 GT/CS, with Kooks Long tubes, high flow catted H, 4.10s, C&L CAI, Flows, FRPP cams, custom tune, etc and that only put up to about 350'ish on...