I have a 63 Olds F-85 4 door sedan. I'm going to redo the exhaust and want to keep it stock. I have 2 NOS mufflers. One I believe is for a 62 and the other for a 63. The GM part number stamped on one of them is 381144 and on the other it's 1355854. Does anyone have a parts book that will tell me the correct application for both of these? Many thanks in advance.

 

From 1974 parts book: Grp 3.701

381144 is 1962 F85 with 4-barrel carb and 1963 F85 except Jetfire

1355854 is 61-62 F85 with 2-barrel carb

380173 is 62-63 Jetfire