it will be interesting...you have to consider a few things in guessing at the price of a 6.4L powered challenger..

its at least 75 more horsepower than the srt8 LX cars, and the price of those range from 38-43k. the 8.3L viper had similar power to the 6.4L, and it was 80k. the GT500 has similar power, and carries an MSRP of 40,000, but they are going for way more than that. also, while it would be nice to think that the 6.4L challenger would be priced like the GT500, that means it would cost less than the 300C srt8, and i dont forsee that happening...

but who knows..dodge could decide that they want to steal back the pony market like they did in the late 60s, and release a bargain car like the roadrunner was back then...

however, im not holding my breath on that.