Another view:

According to a Chrysler rep talking informally: “Cars should start rolling off the line in January-Feburary of 2008, hitting the dealers by March. There will be a SXT model with either a V-6 or a 4.7 V-8. The first hemi R/T's will be all autosticks. The SRT-8s will be the 6.4 Hemis putting out 500-505 HP. The story right now is the manual trans is still up in the air, he said there is a faction that wants only autosticks, and another wants the 6 speeds. He's backing the 6 speed availability.”

Allpar.com has also stated: "The 6.4 liter version, at a historic 392 cubic inches, due in 2008 with the Dodge Challenger, does the SRT-8 one better..." See:

http://www.allpar.com/mopar/new-mopar-hemi.html