Hi Lee,
Honestly, I’ve seen them in worse condition that that. Is there any internal damage or thread problems on them? If not, and you just want to cosmetically improve them, I suggest you call around to car restoration firms in your area and see if someone will do a glass bead , soda, or walnut shell blast cleaning on them. The blast, and maybe rechroming with SATIN finish chrome (not gloss chrome), will make them like new, if there’s no other damage inside that would justify remaking them. Sand or grit blasting is NOT recommended either, they will be too harsh. You want to give them a gentle blast cleaning.
You could even try a clean-up with steel wool or very fine silicon carbide paper yourself, if you’ve got elbow grease and gumption to do the work.
In any case, having someone remake them will not likely be cheap, there is a lot of work in them, and new ones still need satin chrome if they are to stand up over time and look the part.
Good luck, JD