If it's a Stillen kit you're looking at 400-450whp, with a few outliers around 475 after they swap out a lot of parts. Not 500 whp. It's overpriced, and I wouldn't buy a used car with aftermarket forced induction. Ever. Do it yourself and know it was done right.
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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent
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