The Mercedes SLK 320 and the Crossfire are sister cars which share 90% of mechanical parts including the engine. New Mercedes mechanical parts are available cheaper and easier to get than Chrysler Mopar . Ebay, Facebook Marketplace and car-part.com for used parts , Be aware the roadster is prone to the rear window glue failing due to age causing it to come loose from the top and 2004-mid 2006 had a sticky ignition key problem.
What are you looking for coupe or roadster, auto or manual ? Helpful hints when buying a Crossfire : https://www.crossfireforum.org/forum...crossfire.html