There are no turbo kits for SLK350 and there won't be any released in the future. The only solution for you is to have a custom turbo setup made... which doesn't really make sense because it would cost you twice as much as upgrading to SLK55 AMG. From my experience, a custom turbo setup with tuning will cost you 15-20 grand
minimum. My advice would be save up for SLK55 AMG and if you still want more, get a kleemann 550hp+ kit.
P.S. If you do decide to get a custom turbo setup, contact
www.heffnersperformance.com They make custom turbo kit for everything from lambo gallardo's to Ford GT's... so I'm sure they wouldn't have any problem turbo'ing your SLK350. What its going to cost you though, is a whole other story
