This 1966 is being offered BIN for $279.99 and the 65 for $225. Currently a "No sale" on both, too high. The 1966 version will work on a 1965 Mustang. The 1965 version will not work on a 1966 Mustang, because of the inside round corners on the dash and pointy corners on the delete plate.
Ebay Auctions No. 234024628128 (66) and 154570764737 (65)
Cory