For cost, it would make more sense to buy the motor for a 32 amg rather than collect the internals. A lot is different in the motor. That's not even the hard or expensive part. You need all of the plumbing and brackets for the heat exchanger and intercooler... That's the hard part. Then you need an SLK32 amg ECU unlocked and coded to your car/keys using star das. - That's the expensive part.