Kahne using R5 Engine at Kansas…and beyond? UPDATE:

#9-Kasey Kahne, Teleconference Transcript (in part) from September 29, 2009:
Q: What engine will you run this weekend at Kansas?
Kahne: I’m using the R5 again this weekend, the same as what we had last week.
Q: Do you anticipate going back to the R6?
Kahne: I think it will be all about reliability. If they think they can get it back where it’s really reliable like the R5, then I would think we would probably go back to it. What I told them was that we have some points to make up and if we have anymore issues where we fall outside of the top 35, we’re screwedwe have no chance. The very little power that you gain with the R6, it’s not nearly enough power for me to say let’s take a chance. We definitely want it to be reliable. Maybe we’re down a couple horsepower, but that’s it. At the end of the day it’s not a big deal.(Dodge Motorsports NASCAR PR )(9-30-2009)
UPDATE: Kahne will be using the old R5 Dodge engine this weekend for the second consecutive race, and Richard Petty Motorsports co-owner Richard Petty said time will tell if he gets an R6 back in the car. Teammate #19-Elliott Sadler will have a developmental R6 in his car at Kansas. “Until it proves its reliability, we feel like it’s already got us behind, so we don’t want to take that chance,” Petty said.(SceneDaily)(10-1-2009)