I'm still a bit crazy looking into this SC issue and finally contacted my local Mercedes dealer to get a price quote on the SLK32 AMG Supercharger, Intercooler and accessories to transform my car from NA'd to SC'd. Complete cost for parts $4,550.00 plus tax, install not included.

But, with the change, I found out I will need to change the wiring harness and ECU because the SC has sensors that interact with the rest of the engine systems. And still the question of whether the stock engine and manual tranny can handle the boost and added HP and what other bugaboos will come up when I change the ECU.

Looking at a big job with at least 6.5k in parts. And a dead warranty. I think I'll wait another 29,000 miles when it expires. I have ordered the new Berg Werks differential with a final gear ratio of 3.69. a 13% change from stock. It should be in mid February.