My first custom bike build was a '67 black bomber CB450........the wheels, frame and motor were left original. Everything else was changed including separate clocks, fiberglass tank painted Cadillac Gold, and alloy fenders. I remember riding it from Wisconsin to the Indy 500 with my open meggas. The side-mounted license bracket broke on the way home. I traded it on a new '69 CB750.
My next build was to assemble a '57 Triumph T110 Chopper........Coffin tank, raked head, Amen Savior springer with 1/4-moon rocker and 21" spindle wheel, Harley 16" rear, stepped seat with bayonette sissybar, chrome frame. The motor was puched to 750cc and it surprised me that I could build my own wireharness and have the bike start on the first kick........Got married a few years later and sold that one for cash!