Chrysler Crossfire and SRT models use MB SLK running gear, engine, transmission and differential. SRTs are supercharged V6. They use the 722.6 / W5A330 MB transmission.

Chryslers calls them NAG 1, New Automatic Gearbox Generation 1

Dodge Sprinter, Chrysler 300C, Dodge Magnum and some Jeep Cherokees also use the same 722.6 transmissions used in MB vehicles, Chryslers Designation is also NAG 1s. Chrysler 722.6 and Mb 722.6 are the same the only difference is the application. V8, V6 or 4 cylinders

Also, check this link for a full description:

https://www.crossfireforum.org/forum...formation.html