Waiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiit a minute........
The OP has a 1966 318 in a 1966 Barracuda????
Canadian?
A US 66 would not have a 318 because a 66 318 is a poly and pretty wide.
AFAIK, Barracuda didn't get a 318 until 1968.
Should be a 273 in a 66.