Okay...time for questions

[crazyhorse]

I Totally agree with the mechanical mods taking ALL precedence, right behind safety.
That said, at the speeds mentioned lift WILL be a factor in handling. A slight nose down rake of maybe 1-2 degrees will help tremendously. This will put any kind of wing/spoiler well into the airflow off the rear of the greenhouse. Closing up the factory grille area will add a slight amount of downforce on the front, and cut the CD slightly. A deeper airdam is a great idea. The one from Stevesby is deeper, and has a larger opening. The aftermarket skirts don't lower the bodywork any. The rubber "baseboard" moldings I suggested WILL lower the bodywork, preventing air from getting under the car. Air under the car = lift, lift +speed= scary handling
Yes, Subaru spent millions to get the CD of this car down to .29, but they weren't concerned with aerodynamic lift, just drag. The gorgeous rounded body of the SVX WILL build lift over 130mph.

My '74 MustangII with a 5.0 HO & AOD trans would achieve 140+ mph, BUT at that speed the lift overcame gravity to literally get the car airborne.