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kellcats521 kellcats521 is offline
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Join Date: Feb 2005
Location: Atlanta Metro
Posts: 219
OBX are 321 - I had them tested. That alone puts them on top of the 'off the rack' 930 headers IMO, but I'll also say that fitment was better than any B&B product (on ANY car, not just a Porsche) that I've seen.

I don't know what vertex/GSF/dansk stainless headers are made of - only the ghl's are also documented as a 'production' 321 stainless header.
Old 08-21-2007, 11:35 AM
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