Wren 44 Turbine on a T-Rex 700

I love the sound of the turbine! Good if you have £2750 to spare for the system.

Some Specs:
Power 5KW (6.8hp) - Double the power of an OS 91HZ!
Diameter 86mm (core engine)
Length 305mm (12in)
Engine Weight 1320g (46oz)
Ancillaries Weight 250g (8.5oz)
Gearbox RPM range 4000 - 15000 RPM
http://wrenturbines.co.uk/engines/helicopter/44helicopter

Photos of a lucky guy and his Trex 700 turbine:
http://www.flickr.com/photos/laurent_cluzel/tags/wren/