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Stealth = Extrude Hone, Stock Cams (550 vdyno, grain of salt)
Tuxed Engine = Extrude Hone, Custom Cams (untried)
NaSTy = Stock Head, Piper Cams (563 hp dyno verified)

Stock head and cams will support low 500 hp
 

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On a 2.0 probably, on a 2.3 it will support 500-525 to about 5000 rpm then tapers off in high rpm. Light extrude hone and springs with stock valves and cams. Boost was a steady 30 psi to 7000 rpm.
 
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