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Old 03-27-2004 | 10:41 AM
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Richard L.
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Default RE: BEST PERFORMANCE ENGINE

ORIGINAL: hobbsy

According to the YS Performance website there is a YS .63s that has the regulator mounted at the bottom of the pushrod tubes.
Yes, but it's called just ".63S" without the modifier "FZ". My point is that there is no "FZ" associated with the new 63.