Flatheads don't die, so don't hold your breath. But if you decide to install a nailhead, first contact the Martins in Grass Valley, CA. They have tons of information and parts available on their web site. The son Matt is the engine builder and has probably forgot more about the nailhead than most engine builders will ever learn. Otherwise there are some good forums out there that are of great help should you decide to read through them. Cant never go wrong with a Nailhead!!!