Check this website for Super Tiger gas conversions:

http://www.aero-sports.com/airhobbies/services.html

However, a good while back I e-mailed them twice about the conversions, with questions about how they were handling the fact that the crank pin wasn't hard enough to work with roller bearings. They never e-mailed me back.

Keith at BME engines is selling a converted Super Tiger .90, (That's where I got mine.) He doesn't convert customer engines however, and I'm not sure if he is going to offer more than just the .90....

Keith?

AV8TOR