The Bravo can be run either way, you just have to change the connection at the shifter. No change is necessary within the drive. They tend to like being run with a RH prop on them, that pulls the gears inwards. Spinning a LH prop puts pressure upwards on the top cap and you need to keep an eye on the bolts if you run some healthy power (thats probably not a good tech description though).
I swap my drive once a year from side to side and change their rotation.