FYI, I tried to buy the logo wheel centers as recommended by RobBaker and received the following from RatRacingGraphics:
Thank you for your interest in Rat Racing Graphics. However, I will be unable to fulfill your request. The MG logo is a copyrighted logo and I do not have permissions to produce and sell. The ones that were made for Rob were processed by a new employee. He was not clear on copyright issues.
I do apologize for the inconvenience this causes.
Rat Racing Graphics
So Rob, Looks like you have one of a kind collector’s items installed on your wheels. Dang, I really wanted a set too!
Rich , Try europarts 4 auction eBay # 260306284038,310097286940 for the MG logo dices and many other mg parts and logo items . try massy 1946 (30205) I bought center bar spinners from there ,the both together look great on the wheels and are not priced bad at$38.94 for 4. on the spinners . The best part if your centers are rusted and wont clean and shine now if you paint them the chrome spinner caps look good and more like a factory wheel ,they were painted silver i have seen black ,from the factory ,and used chrome spinners they don’t have DO-UNDO but knowone will see that. if you get the spinners all you need is 1/4 threded bar stock 12′ cut to- I think 3′ they will spin on your westen wheels using the nut , the big one , still as the center nut with the 2 arm spinner over top of them BEST of luck Dan
Rich, sorry about that I have edited that post and took the vendors name off of it. However you may have luck going to any sign vendors shop to have these made. As a one off I don’t think there should be a copyright problem.