Ridgeley DNF'd after completing two laps in the "Rolex Race" Group 3A final.  Ridgeley's Lister is the ex-Lew Florence car with a Pacific Northwest history.  In NorCal Dave Ridenour campaigned a Jaguar-powered Costin Lister, while in SoCal Bob Edmison ran a Chevy-powered car.  

("Costin" refers to the supposedly "streamlined" body designed by British aerodynamicist Frank Costin.   Bulbous and awkward, it offered little or no aerodynamic improvement over the earlier "Knobbly" body and was described as a "Great leap sideways" in Lister evolution.