Go searching the aftermarket suppliers for the kits. My "Brothers" catalog offers the engine and trans. crossmembers. There are so many parts suppliers for the A.D. truck that shopping around really pays off. What I did when I got started is, subscribe to a truck magazine like "Custom Classic Trucks" or "Classic Trucks" and start ordering catalogs. Many online suppliers offer catalogs too. You can buy almost anything for an AD truck, so good luck,
Scott