I had an absolutely flawless 03 Mach and I sold it because I didn't want the financial strain of $250/mo insurance while buying my first house.  I didn't cry only because I was replacing it with my other love at the time, a black 02 Lightning.  
Long story short- HUGE mistake.  In 5 years nothing ever went wrong with my Mach, even with the mods.  The SVT?  PIECE OF GARBAGE.  Made like a sloppy turd.  The ride was bad, the quality was worse, and not nearly fast enough to compensate.