I stopped keeping record of it a long time ago, I don't like to think about it. I did port the head and build the engine myself so that saved me a lot. And the fact that the engine is nothing special and not very radical at all. A very good friend of mine owns a shop here in the states and he was nice enough to lend a hand on the things i could not do myself, like all the pretty welds he laid down. Most of the parts are available for purchase though him. the link is in my sig.