I just installed a set yesterday on my 02 Viper, all you need is longer bolts from a newer model sled (Apex). I went with 4.5" shaper bars for the inners and standard 4" Woody's on the outside. I'll probably go back to my dealer and pick up a set of 2" carbides to try on the outside, I'm sure they'll be plenty enough with my unstudded track.