us 60
its a great plane you will love it!! i had a os 91 fs,, man fantastic!!
wuold do verticle no problem,, mine was the unpumped version,, i cannot say enough good about this plane, and engine!! i did dumb thumb my u.s. this summer,, but loved it so much got on phone and got another asap!! the 91 is perfect and i think you would love it too!! jeff