Oscar:
welcome to our world!!
you have a great looking Camaro!! If it were me, I wold leave it exactly as it is. Maybe you could switch out the dial, but you point out that this is the rarest version, and you are unlikely to find this same dial. Any "lesser" version of the dial will cost you in value, both sentimental and financial. Most serious collectors would counsel against refinishing this (or any other) dial.
TAG-Heuer provides full service / restoration on these, as follows:
LVMH Watch & Jewelry USA
After-Sales Service Division
966 S. Springfield Avenue
Springfield, NJ 07081
Phone / Toll-Free (866) 260-0460
Phone (973) 912-5252
Fax (973) 467-5495
Enjoy this beautiful Camaro . . . a rare watch, with a very special story!!
Jeff