None, particularly none with the Sarona blood. I had this bitch; 50/50 Hemphill and Sarona/Clouse, who was a wonderful, desperately game bitch. I never got any pups from her.
http://www.apbt.online-pedigrees.com...e&dog_id=19923

If you go back further than the era you are talking about (1970's-80's), the OFRN strain influenced many, many strains of modern day dogs. Klaus' ZEKE for example was a dog who was roughly 50% OFRN.
http://www.thepitbullbible.com/forum....php?dog_id=17

I have written several articles and posts in the past on OFRN dogs. Jack and I made an effort to try and bring back a game strain of OFRN dogs some 8 years ago or so, but were found wanting after expending significant time and resources to do so.

Bottom Line- OFRN no longer exist in their pure form as they once were. They are as watered down as a line of blue dogs who are bred for color. Evolotion's dogs probably carry as much of the OFRN blood as any working strain today, and they definitely carry the phenotype and performance traits the original OFRN dogs were known for.