Newport 28 prop specs

Aug 2, 2016
2
Newport Newport 28 San Diego
New to the group

Recently removed the old A4 from the boat and have installed a 48 volt electric drive that seems to be everything I hoped for - quiet, no fumes, vibration free etc.
I tagged into the existing prop shaft and prop but might want to change to a 3 blade in the near future.
Any ideas on what might fit? Shaft size is 7/8"

Thanks
Ron