Need '64 Barracuda dash pics.
The dash stamping is different. The '64 has a special opening designed to hold the push button shifter. It also has a different heater control setup. I'm pretty sure the dash stampings will interchange. I don't think you can physically interchange the instrument clusters between the two dash stampings. From the picture you have it looks like the 65 cluster wouldn't quite cover the opening in a 64 dash. You could probably take a '64 dash & close up the opening with sheetmetal to make the 65 cluster fit. The pushbutton shifter will fit to the left of the '65 instrument cluster, but might not look quite right because the shape of the bezel around the 64 shifter won't match up to the shape of the 65 instrument cluster bezel. Don't know if the wiring harness connection is the same either. There is a smaller pushbutton shifter bezel, only half as wide as the one in your pics, that I think was used in some of the cheaper lines of Valiant. I have a bitmap pic of one but I can't figure out how to shrink it with my software. If you want a pic, PM me with your email address & I'll send it to you.