Hollander shows:

1973 Valiant Scamp w/8-3/4" #1219 - 51-7/8" lg x 3-1/4" dia
&
1972 Dart w/8-3/4" #1219 - 51-7/8" lg x 3-1/4" dia or #1087 - 52-9/32" lg x 3" dia

maybe