PaulI have an original passenger car air filter.Not T Bird-Passenger car air filter.
It measures 17 5/16 O.D.
It measures 15 on the I.D.
Its 2" tall.
Be very careful as that extra inch will probably cause clearence issues under a Birds hood.
Also those carb studs being out that far could dent the hood if the hood accidently got slammed shut.
Hope this helps.
Oldmics