Once upon a time, SLK55 and I had a love affair. No it wasn’t the fastest, and it didn’t growl like my naturally aspirated C63, but god damn was that car fun to drive.

I think I want to buy it again, and this time put an aftermarket tune on it.

Anyone have any advice, from links to for sale listings, or things to look out for between model years, or info about aftermarket tuning ?

TIA!