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You can get a 630HP crate from Arrington with a warranty. The heads will certainly support the HP.
$14,899 plus a $3100 core charge. 
Rick and I were talking on the phone tonite about these new Hemi's, it would be cool to find a stock 5.7 or 6.1 from a wrecking yard and throw it in a light weight hot rod. I'm wondering if it would be better to pour money into modifying this motor internally or just slap a supercharger on it and go.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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