You might get the answer you seek. However travel trailers are not like cars and trucks. Many times the year make and model mean nothing when buying parts. It is the old part that determines what is needed. In my case I took the old seal to NAPA and they matched it up and got me 4 new seals.
Hope you find what you are seeking.
1966 Mercury Park Lane 4 DR Breezeway 410 4V, C-6, 2.80 - Streamless.
1966 Lincoln 4 door Convertible 462 4V 1971 Ford LTD Convertible 429 4V Phoenix ~ Yeah it's hot however it's a dry heat!