I have the Volvo Penta MS2B -L The straight Version. Gear
box..The last letter L shows it is a level box. The letter A would show an angled box.
It fitted right onto A three cylinder 20 HP Kabota D1005E with no problems. ALL the holes lined up in the right places for both the gearbox and engine..
And confirmed today By Volvo the gear
box runs in either direction at the same ratio
2.3:1 as it has what they called a cone clutch
So a R/H or L/H prop will not be a problem either. Even if the rotation of the engine is not the same is the Gearbox output..
Now I am no mechanic
I think and others will confirm this if it is right The Beta engine is the same as the Kabota
Flywheel housing if not the same engine..