One more thing to watch out for between 41s and 42-48s; while you can interchange the torque tube and banjo (and transmission), be aware that you cannot interchange rear axles, rear axle housings and springs. The 42-48 cars had a 1 1/2 wider wheel base, so each axle was actually 3/4s of an inch wider on the 42-48s. The only way to know for sure is to have a good parts book. The 38-46 Ford Wholesale Parts and Approved Accesories Catalog is a great source. There are multiple new and used copies available on eBay right now. The "green bible" (The 28-48 Ford Chassis parts book) is also a great source, but be aware the green bible will not always show the original part, but sometimes the approriate replacement part, so this could hurt you in concourse judging. Scott