Trans-Dapt Push-In Round Breather - 1-1/4 in Hole - Grommet Included - Chrome Go-Kart Suit this is the adapter you

this is the adapter you need

Tire Fitment: 1964 1/2-1966 Mustang - 315mm

Ford / Mercury 1962-77

1968-2017 Chevrolet Caprice

1 5/8" overall

Trans-Dapt Push-In Round Breather - 1-1/4 in Hole - Grommet Included - Chrome Go-Kart Suit this is the adapter youTrans Dapt Performance 2 3 4" Diameter "Push In" Style Breather Cap (Includes Grommet) Chrome The internal baffle and filter element prevents oil seepage. Replaces GM #6421868 on `65 67 BBs Trans Dapt Valve Cover Breather Cap 4871 Push In w Grommet 2. 75 in. Diameter Chrome Valve Cover Breather Cap Each member company of the Hedman Performance Group is a specialist in the field they serve. Hedman hedders specializes in headers, Trans Dapt Engine