it seems that bang/buck, best is either a strong V8 with gobs of power to start with or a turbo 4-banger (which will still cost a shit ton to make 400whp/tq).
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2011 Mustang 5.0 | 3.55's | Lethal Performance off road H-Pipe | Magnaflow Muffler Delete | JLT CAI/Bama tuned 417whp/ 404 ft/lbs
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