I have a '48 desoto custom and need the clear knobs for the gearshift and turn signal. I also wondered if anyone has any idea what the color upholstry was usually in these? I have bought some Coker H78 x 15s WWW and the tires on the car look to be rubbing on one of the front end parts. Anyone have any idea why this might happen? It is in very good shape and has low mileage. I am just retired and this was my first car at age 15, so it has a lot of value to me and I want to keep it original as I can. Any help would be appreciated.