Originally Posted by grease lightnig

I like the 2003 S 4matic. Would it be impossible to make one a diesel? Lets make it one harder and make it a 06-07 Cummins 5.9 liter. Getting the computer to accept the engine would be next to impossible. My 3.2 CDI motor should go in because they were offered in Europe but that does not mean it could be a doable project.