I'm having problems finding an oil filter for my 80 cdv,368,my local auto supply shows an K and N fliter for an 81 368 (4-6-8-) but just a store brand ,probably fram for my 1980. whats the difference with the oil filter for a 368 and a 368 with the 4-6-8?. thanks

No difference. Cross reference to a Fram PH 3429.

Thanks for the help.