I believe there is a little variation, as I'll show in just a minute. You have to consider if it is a 300L, 300S, 330 etc.

Aeroworks 37%300L 117" wingspan,
Aeroworks 39%330 117" wingspan
WildHare 35%300L 105"
GP as stated above. These are close enough for kicks and giggles though.

Goldberg used to make a kit for the 120. The wingspan was 69" and it flew really, really well. Don't know if you can find that kit anymore or not. The Great Planes 60 size kit may also welcome a 120, but am not sure.

Ed