The YS side exhaust with a Dynathrust muffler would probably be one of the strongest 2 stroke setup you could run in SPA competition.
I think it was a mistake to allow the 4 strokes in SPA. They were not a factor back then and only development after the area of the legal planes allows them to dominate now.
I too like the more recent pattern models up to the 90s like the Atlanta, Arrow, Eclipse. Bootlegers, and Tiger Tails that had the RE piped .61 engines prior to the new rules with only size and weight restrictions. Perhaps SPA should have a class like this and maybe call it "Legends". I think I will contact Mickey Walker about such and refer him to this thread.
Then I could finish my Deception or build my Great Escape and use my Picco RE or O.S. Hanno special. Maybe I should try to pick up a YS Long Stroke or two.
BTW does anyone know where I could get a set of cores cut for the Deception at a reasonable price?
PilotFrog