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Yes I am sure about that.
The "primaries" are those short tubes that connect the flanges to the rest of the system. Remove the heat exchangers and cut one of the tubes in half. Measure the ID not the OD. It's less than 1.5".
SSI's don't perform as well on the 3.2 because they are better matched in size to the SC. The HP bump for the stock Carrera vs the stock SC comes from 0.2L extra displacement and EFI.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
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