Right now the record is 360ish, and that was with a dry sump and a bunch of one-off parts. He was still a 3.7 but he was spinning it over 8k rpm on e85.
Anything's possible with a big enough wallet, but you might end up spending more than forced induction without all the torque.
If you bought a stroker kit, you'd likely need custom pistons since most buyers are using them with a turbo.
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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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