RE: clunck on backing out of parking spot
My SRT has done the same thing since day one. Seems to be coming from the right front side (but I always back out and turn the wheels left into the street). I think it has a lot to do with the combination of the tire size and the stiffer suspension going over an elevational change (slight drop from the driveway to the road surface).
It only happens when I first back out from being parked overnight - for a good amount of time.
Other than the clunk backing out and turning into the street at the end of the driveway, the car is solid as a rock in all of the gears.
I'm not worried about it.
[8D]