You need to get somebody to do the calculations as different props may require different sizes. For example my 33 with a D1 30 had a 16813 fixed from the factory, but the flexoFold is a 16*11. Changing pitch needs new blades which are half the price of a prop!
A good volvo dealer who sells the props may be able to advise. You should be aware that Volvo folding props are not the best - well known for eating anodes. A 2 blade FlexoFold from Darglow iss an altogether better proposition.