While the ID of the aftermarket pipes may be larger, the actual port size at the mating flange is too small on any of the 986 headers, stock or aftermarket. Unless he custom ported them to match. If not you are choking the h*ll out of the motor right at the top.
Take a look at the linked photo, on the top is the 996 3.4/986 gasket and the bottom is the 996 3.6/3.8 gasket
http://www.6speedonline.com/forums/attachments/boxster-cayman/84085d1227198763-need-stock-set-cayman-s-headers-dscn1267.jpg
-Todd
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Originally Posted by BoxsterLewis
Todd, Yes Gordon did not use stock 3.2 headers, he used aftermarket 3.2 headers with larger ports.
chaudanova yes im interested, can you PM me how much?
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