SPA is about flying older design pattern ships from the 60's and 70's. Here is their site:

http://www.rcpattern.net/spa

As you can see the YS engines are not legal. Only 91 normally aspirated 4 strokes or 60 sized 2 strokes are allowed.

I will be flying novice so the only long downline will be from a stall turn. The highest scored maneuver are 3 consecutive loops. It's also the hardest which is why it is the highest score. With the TT .91 acting the way it is it is even more difficult. I said I would buy a 2-stroke. Actually I won't because I have a good one or two now.