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Here's the precision-crafted ASM 58mm billet throttle body. Aside from the port matching, the nitrous boss install, and the addition of this beauty, the only other preparation our intake received took place at Extrude Hone, where an abrasive media is forced through the entire inside of the manifold under high pressure, leaving a near perfectly polished surface in its wake. Needless to say, we're sure that this 383 will have plenty of intake charge for making big power. Stay tuned for the series finale in next month's issue.