I want to "modernize" my 65 /6

That dash is exactly what I'm talking about. I couldn't afford the interior work right now but I would spring for the instrument cluster. Can anyone tell me how this is accomplished? I could fabricate the panel but wouldn't know where to start-w-the gauges etc. I also put air on line and would love a serpentine system for the belts AND my after market A/C evaporator is a piece of garbage that sits under the dash-w-4 vents. It is from a Co. in FLA I won't mention because some here may swear by them. I swear at them and would love to relocate the vents as yours is. Of course if there were a floor shift conversion that is "easy" I would like this as well. Any information is much appreciated (and needed )
Thanks
Howard