Stick with a "pusher" prop. You could also check APC's web site to see have they have the size/pitch you want to run. I'm running a 9x7 or 9x8. You're going to be in for a pleasant suprise when you install that Rossi.

Start with the mini tune pipe, throw a 9x8 pusher on it...and haul *****! (break the motor in first)
Have you received the instruction manual yet?
Gary