wow, Brian, I would never even consider topping 175 in that car w/ out functional aero aids (like the cobra R wing and splitter) for stability reasons. The aero on typical mustangs causes a whole lot of rear end lift above 160-170. fwiw, you should play the lottery more, with your luck at extremely high speeds, you might win a lot of money, lol.
this is the reason the production car is limited to 155 electronically.
I have more seat time in the 03 than prolly everyone else on this board combined (excepting maybe 2 guys) and I must say that it still impresses the heck out of me every time I drive one.