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I have a 420a myself. And i have been killing myself with the question of parting with it or not. I'm going to save you the "sell it for a 1g turbo" speech, and just give you what you asked for. upgrade the pistons, rods, cams, a larger throttle body is a common mod for us (port match the intake manifold as well), headers. Honestly though dude, ive heard from many sources that no one has even hit 200hp with a N/a 420a. Then again if you like driving it, who cares?
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