Well I am getting a used Brison 2.0 engine and was wondering where to start with prop size on this engine ? What kind of rpm will this engine turn ?

I am assuming that the engine was manufactured after Brison took over A&M. The engine looks identical to a current Brison engine and the ignition control box has a Brison Aircraft sticker on it Any good pros or cons for this engine ?

Thanks in Advance
Scott