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Old 08-21-2005, 03:02 AM
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ANDY M ANDY M is offline
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Default Re: ZL-1 & L-88 head design clarification

Steve, I wish I had taken photos of the casting numbers when the covers were off. The "HI PERF" is there, and the dates are March and April of '69.
They also have the "half moon" casting mark, indicating a closed chamber, square port application.
Difference between them is the amount of grin on your face at WOT.
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