Viper 790XV rocks!! I have it on my car and the range is incredible (up to 1/4 mile without Code Hopping enabled) and the LCD screen with paging notification is great. I don't know if they will install the Remote Start on yours though since it is a SVT.

2005 WR Blue Pearl Subaru Impreza WRX STi 2005 Silver Mazda 6s 5-Door ATX Bose Sound, Moonroof, Leather, Clear Tails, Sirius