I've seen a kit built one fly put put style with as OS 35 FP engine. I've also seen Saito 56's, 72's, & 91's on them. There's 2 ARF's at the field. One has a ST Blue Head 60 and the other started out with a Saito 56 but was changed to a 80.

In reality, the plane is big with a lot of wing area. The one with the 35 flew but that was about it. The ones with the G60 and the Saito 80 are about right. But the 91 will give you more overall flexibility through the years in other models. But actually the plane will not fly much different whether thers a Saito 72 or a 91 on it.

Enjoy,

Jim