Go with Erik at HK racing engines. He is the best. Period. For 500 rwhp, a ls7 based motor would be ideal. A small cam upgrade(along with appropriate valvetrain) is all that is needed to crack that barrier. It will be the most streetable option to reach that power leve out there without reverting to Forced Induction.
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
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