As long as your not idling on the transition circiut any power vallve should work well, I would probally try a 8.5 or maybe a 7.5 to be safe up twocents I do work on the all the circuits to get them to work the way I want them to up Lean is mean up Fat is fat shruggy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)