LATE OLDSMOBILE ULTRA LIGHT WEIGHT BILLET STEEL FLYWHEEL . FITS 1968 T0 1987 OLDSMOBILE  307,350,403,455 .THESE FLYWHEELS ARE NEW AND IMPROVED DESIGN .

THESE FLYWHEEL ALSO HAVE A BOLT ON WEIGHT WHICH WILL ALLOW THESE FLYWHEELS TO BE EXTERNAL BALANCED ( FACTORY BALANCED ) OR SIMPLY REMOVE WEIGHT AND ITS A NEUTRAL BALANCED ( O BALANCE) .