Re: LED's in cluster and rest of interior
the cluster is tricky.
vendor here used to do lots of them. I had a completely blue cluster along with every other light, switch, etc. he had a fire few years a go and mostly stopped. But IIRC he's been popping up here and there,
diboblo is his user might give him a try via PM see if he still doing WK.
the HVAC and center stack ones can be done if you can solder understand some basic electrical. they are oem incandescent so you need to remove the incandescent and add some led. lots of DIY about that. search here and youtube.
the shifter is 3 LEDs and the doors get more complicated.