Plymouth Valiant / Barracuda instrument Cluster 1964 - Making New Again

My instrument cluster on my 1964 Barracuda is showing all the yellow plasticy colors. It looks far from new. Can someone please point me in the correct direction to getting these things looking new again. I did't want to ruin them with the Chrome like spray paint from Home Depot or AutoZone. I have seen "restored or refurbished" ones on ebay that look fantastic but are pretty expensive. I need to do the instrument cluster as well as the area around the bush button gear selects. Any help, ideas, or counsel would be much appreciated. Thanks so very much!