S&M sold it to Don Prudhomme in the mid-70s and it was modified to match Snake's other ramp truck and used to haul Tom "Mongoo$e" McEwen's funny car as part of the Hot Wheels team.
Read the story and how it was recently found and restored by Prudhomme at http://www.snakeracing.com/newsitem.asp?snakenews_id=1213