Bought this '04 SVT used. No regrets! This truck is a beast! You want a rush? Mash the pedal and if you can, hold on! You had better be ready! I get tons of looks and complements every time that I drive this beauty. Respectable MPG for such power (13/18.) Had it for 7 months now and no problems. The only complaint I have is that I don't have enough time to drive it more. I have only put 1000 miles on it.
To steal a line from another reviewer, the gas pedal. Better than any ride at Disney or Six Flags.
Speakers. If you have a greattruck, it should have a great sound system. Although, I have to admit that the superchargers whine is the sweetest sound coming from this truck.