You mean something like this?
http://innodyn.com/aviation/index_aviation.html

"David Findlay" wrote in message
...
Has there been any development of small jet engines for light aircraft,
like
the engines used on the Eclipse 500? Small turbines would be great for
high
performance homebuilts if they were cheap enough. Anything down to the
price level that could compete with high horsepower Lycoming's or
Continentals? Thanks,

David