RE: 2C 91 engine
I think people had better look closer at the Irvine line. I couldn't find an Irvine .90/.91 at the Sig website or the Just Engines one. Those are the two biggest Irvine dealers I know of.
P.S. the reason I went looking is that I'm also in the market for a .90 2-cycle.
The main ones I'be turned up are O.S., Supertiger, MVVS, and Magnum. Seems like a hole in the marketplace to me. I would love to have found that Enya or Webra made 90 2-cycle engines. I'm a little skittish about MVVS having zero experience with them and no friends that do either.
Wiz