CMP Spit, powered by a YS .91FZ:
A couple of short video clips:
* [link=http://www.whitetyphoon.com/rc/gsp_spit_show_pass.mpg]Spit Show Pass[/link] - full throttle
* [link=http://www.whitetyphoon.com/rc/gsp_spit_figure_8.mpg]Spit Figure 8[/link] - half throttle
Can't beat the power and sound of a YS four stroke.