The Pawnee came in three flavours.
150 HP....the origional.
235 hp the second version with a derated Lyc.0-540 carbuourated.
The Brave with a Lyc. 300hp.
I flew the 150 hp Pawnee, it was underpowered I then bought the first 235 Pawnee that was used in Canada C-FNVY. it was a wonderful little Ag. plane and I used it for several years in my company.
It was not aerobatic in any way, way to much profile drag especially with all the spray gear on it. Very easy to fly once you got used to looking at the long nose.
Cat Driver.