I wish there were dyno charts for all the pipes.... but if it hasn't happened in 20 some odd years, its not going to happen.
Regardless though, I just want to be sure you understand that even with a top end pipe its going to sign off around 7000rpms, right about where the magic starts on most two strokes. I do personally like the feeling of the pro-circuit platinum over my gnarly though. Just "feels" right lol. Really snappy on the top end.