Not sure why people are waiting and hoping for the 6.4. I mean you can get an 08 or 09, go to http://www.moparsupercenter.com/asm-...temhemisc.html and buy a Mopar supercharger and raise the HP on the Challenger to close to 600 hp with a simple bolt on. I know it doesnt list the Challenger yet but they do have the 6.1 and I am sure this one work on the Challenger very soon. This way..you get the car now, no waiting (except for this crazy wait time for the new 08's) and you get a ton of Horsepower to boot!