I was offered an enginless FC for free..
 

http://www.rx7club.com/showthread.php?t=387779

go here for details..

I'd take it... if I had the time, the tools and the garage space to work on it. IMO you should get an N/A motor, it's cheaper and more reliable. If you don't know what you are doing then a turbo motor could get real expensive real fast. If you screw things up, you'll need another motor!