jdb840 the 6-speed is a swap in for the new Charger and if it fits the Chargers 5.7-6.1s. That way the guys who wanted a 6-speed in the new Chargers can get the swap. Direct bolt in they say. So I think that the 6.4 will be a nice addition to the lineup. I'm not sure if they offer it for the LA small blocks or the old mopar big blocks, but I should go to the site and see if they do.