Well, the Great Planes Tiger Moth is 71" wingspan and calls for a 91-4s so with a 120 it would be a blast, I don't know if you're into "Golden Age" airplanes though.

http://www.greatplanes.com/airplanes/gpma1330.html

Another option is the Great Planes Super Skybolt ARF which is smaller at 57" wingspan, but a friend of mine has one with a Saito 125 and it's amazing.

http://www.greatplanes.com/airplanes/gpma1242.html

Yet another option is the World Models Ultimate 120S which is even smaller at 54" wingspan and calls for a 120 4 stroke. It's not very pretty though and I'm not sure about quality.

http://www.airborne-models.com/html/...p?ProductID=29

There you have 3 options so far