Selling my Nickey ZLX Receipt

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**COPO** · #1 03-18-2008, 05:24 AM

I thought they were the 990 heads, but not 100% sure.

**gearheadmex** · #2 03-18-2008, 05:54 AM

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I thought they were the 990 heads, but not 100% sure.

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I believe the ZLX received open chambered aluminum heads, have no idea on the casting number. The 990 heads are steel open chamber heads.

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