William, Welcome to the Madness!
I built a CMC that was in about the same condition as yours when I began. As Robert and Alan mentioned above, the build manual is available on this site and is required for assembly. Also, Carey with Beck was a big help with several of the parts I needed (gauge set, decklid grille, lights, louvered decklid, door pulls, etc.). Be prepared for a lot of fiberglass work, general fabrication and assembly. It will seem overwhelming at times, but hang in there because it is worth it when you finish!
You mentioned headlight buckets. Mine were already installed, however I would have considered using buckets for an early bug from CIP1.com. They would have to be bonded or somehow attached to the body and would provide a good way to attach the headlight assembly and gasket.
I fabricated a front body support using 2 x 2 x 1/4" aluminum angle and some bent steel brackets that attach to the top of the front beam.
Also, I bought a lot of the finishing pieces from Sierra Madre Collection.
It's a lot of fun and a very satisfying project when completed!
James