Yea I don't see $10,000 either. Just adding up the bolt ons I came up with $2,200. then $1,200 for the bike makes it $3,400. Custom ported 90 head, custom crank, carb brings total cost to about $5,000. And lets say a custom billet cylinder cost $1,000. If a shop built it, it might take two days, thats about $1,000 in labor. Still only up to $7,000. Oh wait, I forgot the ASV lever, thats where the last $3,000 is.