I have an 07 300 touring RWD with the 3.5 egg engine. The motor is blown, I'm having a hard time finding a 3.5 for the 300 also for the charger. So far I've found a 3.5 from a 300m and an 06 Pacifica. Can some one please tell me if either would work? My biggest concern would be the transmission, im wondering what I would have to switch out.

Please help.
Thank you.