RE: Precision Aerobatics Addiction
These guys, [link=http://www.neoplanes.com]NeoPlanes[/link], carry Scorpion motors and are great to deal with.
I have a Scorpion 2215-18 that I got from them on a Charger-RC CR-1 (15 oz. shock flyer) and it goes straight up like a rocket.
-Phil