I made my Shovelhead conversion tonight. For those of you who dont know, in Harley Davidson's history this engine was the next motor to replace the Panhead (the engine I modeled below this post). The engine still had the Panhead style bottom end, but the rockerboxes were updated. Kind of rare, these engines were only made from 1966-1969. A short runtime compared to the Panhead which was made from 1948-1965.