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Old 02-05-2019, 11:40 AM   #16
1930artdeco
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Join Date: May 2010
Location: Lynden, Wa
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Default Re: Blown HG results

Ok. Finally I think I got it-sorry I am a bit slow with different opinions being thrown around. But the 509 from Best is for the STOCK head. The 573 is for the 5.5/6.0 heads. I found those both in Copper from Best, so will get the 573 Copper.


Mike
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