I have for sale a GM Vented Optispark for any 1994-1996 Caprice Impala SS Roadmaster or Fleetwood. 1995-1996 Firebird Camaro. 1995-1996 Corvette. This one was removed from a perfect running 1996 Chevy Caprice 5.7 LT1 just a week ago. This unit is clean and solid. Nice optispark yet for a GM Original. Pictures show it.