Lucymcdog, Your '65 will have vertical shocks. NAPA would be a good source.
Later years have horizontal shocks and those are a dealer only shock.
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!