Rich! I guess we are in the same boat. We are old. "Strombecker" kits were not made to operate. They had wooden wheels. However there was a company that came out with a power unit and trucks for the R.I. Rocket. "Megow"had some nice kits. There must have been ten companies that made cardboard side kits. Red ball had some kits that were not cardboard. Walthers had wood kits.