Originally Posted by M60A3Driver

This may help when you are looking for "factory parts". What GraphiteGhost said is true, our cars are based on the 2001 - 2004 Mercedes-Benz R170 platform.
The supercharged SRT6 are based one the SLK 32 AMG and the non supercharged cars are based on the SLK 320. You would save a ton of money if you buy the Mercedes-Benz part as opposed to the Chrysler part.
Example: Chrysler water pump part# 5097159AC $501.60 LINK - Chrysler Water Pump
Example: Mercedes-Benz water pump part# 112-200-14-01-80 $297.60 LINK Merceds Water Pump
Even better, a trusted source for Crossfire parts: Needswings.com water pump: $135.95 Needswings Water Pump
My point is, do some research before reaching for your wallet. If you're not sure of something ask. That's what we're all here for.
Good luck!