Graupner props are hard to find, but I won't use anything else on my 4 strokes. They just seem to pull like crazy. As for my 91 Surpass, I use a Graupner 14x8
I just did a search for the helluvit, and found out that Hobby Lobby now carries Graupner. The link is:
http://www.hobby-lobby.com/grprop.htm