On the su-26 thing. There's actually a guy in my town, here in Missouri by the name of Dr. Ray Vetsch that has put a turbo-prop in a su-26. The turbine is lighter so they lengthened the nose. The plane fits perfectly within the "stock" weight and balance requirements. The aircraft has nearly a 2:1 thrust to weight ratio. The only aircraft more powerful on a power to weight basis is the space shuttle.

Dr. Vetsch is taking it easy with the plane right now, because some Czechoslovakian engineers are calculating what the aircraft is capable of doing safely. Also, the inverted oil system was just installed last winter. Once Dr. Vetsch gets comfortable with this aircraft, I'm sure everyone on here will know about this project.