im very interested in this setup as well. the thing that worries me is the cost and the fact that not many people know how or have the experiance to perform this swap. i have a 00 si and was going to use my head on the b20. i did some research and found that there are two types of b20's, the b20b and b20z. i believe that the b20b has a lower c.r. and is better for future turbo. i would love to see the results of fucarasr's runs. i wont to know if its worth it to do this swap.