I might not glue the rear wheels, if there is a metal axle. On the fronts, if the metal axle goes through the engine block, I might change that out, and fill the hole in the block. Sometimes, that means finding an alternative method to attach the front wheels. For my building skills, that might mean glued fronts!!! I'd rather do that than to look under the hood and see a metal axle running through the block! LOL