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Id like to know the stock OD and ID of the exhaust tubing on these 660's. Long story short I am looking into turbocharging one of these and will need to make some customizations of course. Please if anyone knows, id be very interested. Thanks
 

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I just posted this on the other thread but i measured 38 mm id and 42 mm od on the header were it hooks to the muffler pipe. My aftermarket one looks about the same size pipe. =)
 
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