Racer Robbie
Enthusiast
See our web site for the different height shift knobs available to fit your viper. You will find a picture of the stock height knob and others along with height in inches.
http://www.members.aol.com/AtroRacingTeam/PRODUCTS/AtRoRacingsProductCatalog
http://www.members.aol.com/AtroRacingTeam/PRODUCTS/AtRoRacingsProductCatalog