The props can be confusing when choosing the right pitch, as there were several engine types and some were set up for direct drive. Essentially, there is a choice of either clockwise or counter prop rotation.
The two kit choices in the initial boxing include both pitch types, but there is also some difference in the shapes as well. I think it more important to match the pitch than shape, as the latter is for optimum performance. Pitch though is crucial, wrong type and it will be pushing the aircraft frame backwards, instead of pulling it forward?
So yeah, check your references ...