Instrument cluster refresh

There is a direct replacement IVR
IVR4 Limiter Technical Information - rte
Seems like a good replacement. Don't forget to make a hard board insulator to go between the ivr and the cir board. Very thin like the thickness of a gift box.

NOS guages popup on ebay reasonably priced from time to time.

I would not go LED too much hassle, if you get the correct bulbs they will out last you unless you are 20.

As for the colored filters stick with the oem stuff, you can't go wrong. Nothing would be worse than turning on the turn signals and being blinded at night.