RE: GP Super Stearman
The 2.4 would work ok. I had a Fox 2.4 on my Patty Wagstaff and it was not overpowered at all. With the 2.4 I would not have to add 18 oz of lead to the weight box provided.
I think I will go with the 180 Saito though.
Cannonball200 of OKC