looking for best pit stud dog prospects

I have several hunting properties that are farely wide open and need some faster catch dogs for the "runners". I'm not breeding for resale of puppies or degredation of the APBT breed. I have a friend that came along with his APBT X Greyhound catch dog and the results were astonishing, I just know first hand what a APBT X sight hound can do for me and want some for myself. The Aussies have figured this out for their territories that are open type properties by crossing the bully type dogs with the sight hounds. It worked well for them, I think if the right dogs are matched up the offspring will be produce 40-45 mph catch dogs that will also have some stamina. If there is a non-purist out there with a super star APBT dog or gyp I'm in the market. Thanks again guys.