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Registered
Join Date: Feb 2003
Location: Orange County, California
Posts: 1,257
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TCB, most of the stuff on my turbo exhaust from the heads to the flanges is 8mm with a 13mm OD and for some tight areas 8mm with 12mmOD. and I'm sure it's the same for yours.
http://www.pelicanparts.com/catalog/shopcart/911M/POR_911M_exhaus_pg6.htm
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