Precautionary Tale. Shapeway and Olifer not longer are in business of making 3D chassis. The potential 66-70 Trans Am Mustang, Camaro, Barracuda race is not viable at this time unless we go way-back to stock Scalextric chassis. Many Fly and other slot cars no longer have 3D chassis available. I don’t know how our group B rally cars can be duplicated if using 3D chassis. Sloting plus makes some for Scalextric under the PCR brand.