Ok, talked to my buddy that is a tech at a chevy dealership today. They just got in 3 new ones. The cable from the battery to the starter is too short by about an inch or so. It is in conduit, but *could* rub on the frame and possibly cut through the insulation. It's about a 20 min fix, new cable and boom, all better.
The weights on the calipers... well... no one knows.
After seeing it in person, yeah... I'll take the challenger. It really just doesn't do it for me.