65 and back floor shift console ??

The 65 console shifter is a cable shifter the uses 2 cables to operate the 65 and older 904 (cable) Transmissions, where as the 66 and later 904 use a single rod. So the 65 shifter itself probably won't work without some major modifications. You could always go with an aftermarket shift with it's own console, but the you have to change a lot. One of the reasons the console (in a 66) is so big because it covers the linkage which goes several inches in front of the shifter and then goes into a big hole in the floor (trans tunnel). If you went with with a smaller console you'll end up covering that hole, cutting of all the original console mounting backet (which are welded to the floor) and not to mention dealing with the big hole in the carpet where the old shifter an linkage polked through.