I do have the Dinan kit and don't expect to use it.
It is a complete kit for he 335is in really nice shape. It has some non obvious minor scratches on the tube in mostly hidden places but it is still in great shape and to be proud of.
You can actually polish the carbon stuff with polishing compound just like buffing the car if you really wanted to but it really doesn't need it.
I would like to get $800 for it. I know that is still expensive but it is a really nice kit.
I can add my upgraded stainless hardware if you would like including the black stainless stuff for the fender well making it better than original.