What would it cost to build a 415 and where to get the parts?

Hello gang,

One of the ZR-1 owners in Japan wants to build a 415 and asked if I could find out where to buy all the parts only and how much would it cost. Anyone have a recommended source? I don't think he plans to ship his block to the states for this build, but right now just trying to find out how much all the parts will cost to do this without labor. There might be someone there that will do the build.

Thanks in advance.