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I would personally leave the head alone until 500hp+. I would keep the stock cams for now and throw some adj. cam gears on.
I have an aem v.2 standalone and it's awesome. Rb's must have a new ecu and proper tune to run for a long time when building. The stock ecu can support around 300hp but I would ditch the whole ecu and go aem or haltech.
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