I agree with what's being said regarding sensitivity towards the Confederate flag. However, there is a way around it. Treat this movie the same way that Starsky & Hutch was done. Set it in the 70s when the the show actually was taped. That would allow for a little greater level of tolerance to personal ignorance. People in the late 80s, 90s, and today are expected to know better. The 70s on the other hand...

Gundark, I, too, would like to see Biel, but I don't think that she's even being considered anymore. She was early on and I liked the idea. Alas, I don't think it's gonna happen. Both Simpson and Spears are bad for the role, IMHO.

And I'm glad they don't have Paul Walker cast because then it would just become a deep south Fast and the Furious. I also don't think Walker would be a good fit with either Knoxville or Kutcher. They wouldn't mix well in my opinion. Scott would work well with them, personality wise, and if he were to be a bit more serious (kinda like he was starting to be in The Rundown), then I think it could work. You need some humor in this, but not the outlandish humor that Scott is known for. He could still make it work though.