RE: Gas Pattern engines.
Chuck, I'm currently using an MVVS 1.60 gasser in a Tojeiro 140. With a Mac's 1092 tuned pipe and APC 16 x 11 (or Mejzlik 17 x 10) it is fully capable at 11lbs even. Although I don't have a lot of time on it yet, it is clearly capable of FAI sequence work. The real advantage is energy management through dynamic braking. I believe the ignition system contributes to this, but Brian Young flies with me, and says the braking is as good as the three-bladers that we all know and love.
Although I won't be doing much competing, you may be able to see it around somewhere this season. It is a viable platform, of that I have no doubt.