Richard,
You can buy bungs with plugs from several sources, just do a search. Also, if you're having custom made headers, I'll bet the header shop can supply the bungs with plugs (18 X 1.5 mm thread I believe). If I were going to have someone custom-make headers, I'd have a bung installed in the right and left bank. Locate them in a convenient place for clearance of the WBO2 and ease of installation and removal. They should be within probably five inches or so downstream of the NBO2 sensors. The sensor should project upward (above the horizontal).
Steve
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Originally Posted by Dirk Diggler
