Satio 100. That's the way to do it right. Unless your insane, then YS 110.

The YS 63 is a sweet combo, however if your gonna buy a new motor anyway, do the 100.

Buddy just went from OS 90 stroker to the 100 and dude, that the ticket.

Don't go big 2 stroke. Maybe the new OS 50 Heli with a Jett pipe.