YES, They are worth selling. Try to list on e-bay or craigs list, or here in the Parts section. I would start at $250.00 for the set, and see what happens. I myself could use the [2] trim rings if nice condition, I see the GT center caps on e-bay all the time for $15.-and up. depends on the condition on them, rims go for $25- up, each,plus about $25, on the shipping. trim rings, $20. and up. depends on the condition. alot of time and work on your end to sell. Just depends on how bad you want to sell. Most times people just need parts and not the whole set, but I have seen sets listed also.
68projectcar