blank sent in error so sorry! did you look under car to see if it has the 64 leaf spring in the rear? and larger sway bar in front? early 64s had strange combos of aircleaners and other 63 type stuff (no dipstick for differential etc)but it was 164 cu in engine...my wifes new 64 was early, my new 64 was mid year... regards tim colson 64's are best....