I don't know about any SFP / Nas collabo, but KPFA "Hard Knock Radio" will air their SFP interview in its entirety today at 4pm PST. You can tune into 94.1FM to check it out. If you don't happen to live in the Bay Area or don't have a radio close by, tune in and stream it LIVE at kpfa.org

SFP in SF next week. dont sleep! Symbolic is ill on dem beats... check out "the art of one mind album" w/ illmind

Word on the street is that SFP may be working on a collabo with Nas. That would be hot. It makes sense, I just heard that there other producer in the crew Illmind just signed with GUnit as an in-house producer.
If it is true, it would be a good look for hip hop bringing everything back together. Can't wait to pick up both albums.