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Old 05-02-2010, 09:56 AM   #5 (permalink)
Z1Performance
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exactly - it doesn't exist because the very design makes it useless. The 03-06 DE's had a sloped intake manifold with a single throttle body entry. The spacer evened out the airflow distribution from the front to rear cylinders. This was addressed from the factory with the introduction of the HR in 2007 (and carried forward to the 370Z/G37)
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