EXPANSION TANK FORD upgraded the expansion tanks in 1965 and moved the opening so that the overflow was away from the alternators or generators. This is the upgraded 1965-1966 version that will work fine on the 1961-1964.The gasket 8255A is supplied with this purchase. MakeFORD ModelTHUNDERBIRD Year1961-1966 Item#8080C Info/SpecsPDF Price$224.95EACH Core Charge$0.00 QtyAdd