ORIGINAL: cncpt2prod!
Or you can just do it this way...
1) Let the first run sell at or above MSPR (pre-ordered and allocated).
2) Wait for the larger dealers' lots to start filling with about 10 RTs and 3 SRTs (if that happens in 2008, great! - If not, wait till 2009).
3) Walk in and tell them you'll pay them 10% under the window price.
4) If they don't hit your exact number, leave and drive up the street to the next dealer (easy to do in OC, LA).
To heck with those guys...they don't REALLY care about you. You're just a number at the end of the day (literally). Give them the number YOU want.
You're not going to get $3-4k off a car that doesn't even have $2000 in mark up without rebates. Rebates are generally put on cars to increase sales. I don't think they'll have that problem with the Challengers for a while.
When the 2009's are out and you can find them on the lot, I would say you could probably get them at invoice or $500 over invoice if you work the deal hard. You
might be able to go under invoice on a base V6 coupe, but anything that's more expensive like the convertibles or SRT's, I wouldn't expect much wheeling and dealing to be had.