You could probably go with a Top Flite Cessna 182 ARF or T-34 Mentor Kit (my personal choice) if you feel like building.  A .91 4 stroke is definitely on the lower end of the requirements for these two, but if you're flying scale and not wanting anything crazy, then you should be good.  <div>
</div><div>Very limited choices for what you're asking...80" is pretty big for that size engine.  Good luck in your search.</div>