Hayabusa motors will need dry-sumping ( or accu-sump) to be reliable in a car. Allow some coin for this...
I am building a roadster with a 2006 R1 motor... very light but not as much torque as a 'busa.
http://www.lotus7.co.nz/forum/viewtopic.php?f=16&t=72
Have a look at the build diary...