Front Outside (Sedan, To Sep.-'68) Front Outside (Sedan,  From Oct.-'68)
part # model applied date qty interchange superceded
from to newer former
PANEL COWL TOP
66311-21030 SEDAN 1 Yes Yes 66300-21030
66311-A0630 SEDAN 6909 1 No No 66311-21030
66311-A4930 SEDAN 6910 1 Yes Yes 66311-A0630