1965 273 HIPO FRONT MUFFLER NEW OR USED PN 2534467

The original front muffler was 20.5” long overall, 16.5” case length x 9” wide x 4.25” high. 2.25” inlet and outlet, both centered. 2.25” straight through glass pack core. Measured from my last Original muffler. A good glass pack with these dimensions should work fine.