It's actually both of these. It's been 20 years since I flew mine and believe it or not #2 is still kicking around in one of our basements somewhere. I also had the .60 size ( 72" wing ) and if I could find a N.I.B. kit of the .60 I would buy it in a heartbeat. I would put something like a YS 1.40 in that. They were both excellent flers but simply not 3D stuff.