At the cluster itself, you can squeeze the 66 in or trim the opening a bit. The 66 opening had a semicircle depression removed to make it easier to install the cluster. You also have to bend out the retaining tabs. When the cluster screws into. In 65 they were bent one way, in 66 they were bent another direction.
68 289 convertible Candy-apple red & white
66 200 coupe Blue
94 GT convertible Red & black
98 GT convertible White & black
98 V6 convertible White & tan