This guy on EBay sells Raboesch props. Here is a Raboesch prop for a Type II. If you order one and you get both port & Starboard props he will combined shipping.
I have the Raboesch props on both my Gato & Type II subs and they are smooth with no pitting. I’m doing another sub as soon as I get the three I have refitted. I will get Raboesch props for it.
This guy will sell you a Gato (Surface runner) http://compare.ebay.com/like/270999377090
. He does do diving subs but folks think you must have super clear water for a sub like a large pool but you really don’t.
Ask him your questions to be sure you get what you want.