Heres a few links with info on the $10-$12K engine:
http://www.high-performance-engines.com/b18c1.html
http://www.mrgasket.com/arrow/Arrow/...ID=472&nID=730

And heres a thread about "the beast" over on Team Integra.
http://www.team-integra.net/forum/di...PagePosition=1

Definitely not worth the money. For 12K, you could build a 600+ WHP turbo motor.