I've got a hankering for a Tunnel Vision. The main thing, other than my checkbook, that is keeping me from getting one is not knowing what engine to put on it. The manufacturer likes the OS 160. I have no experience with the OS 160, but from reading comments from other's I am not excited about using it.

I would like to put a four stroke on it, but it would be nice to get some advice from some of you that are more knowledgeable about these big profiles. Is the Tunnel Vision sturdy enough to withstand the vibration from a four stroke? Which YS or Saito would you use? If a four stroke is a bad idea for this plane, what engine would you recommend?

I have already been warned that if I leave the factory covering on it, wearing a feather boa while flying will be a requirement.