Just finished the Winnebago and I am pleased with the result . Started it over three years ago and resumed it about a month ago .Made of plastic ,wood and aluminum sheet .Designed the body and the sides are a composite of plastic and wood which added much needed strength .Used the chassis from an AMT Kenworth kit and added interior cabinets,mini fridge,mini stove ,couch ,sink ,table as well as the dash board ,gauges steering wheel and seats. learned how to make the various components as well as the front and rear bumpers What an epic challenge and build! Sure it has many flaws but it looks the part of a custom motorhome .I made the front grille inserts from scratch 