After sniffin' around in the garage stash I finally found a horn in one of my old Monogram Mustang kits, cut it from the core support, cleaned it up and primer coated it. After that I moved on to the tires to finish them up. I mixed up some MM Flat Acrylic coat cut with 70% ISO and shot the tire sides. I've never been keen on that glossy Armor All tire shine so the result was perfect for me.
Here are before and after results with one of the tires:
and finally all four tires and wheels....