Hi Mark. Can you tell us about which exhaust bung you welded into the manifold? I'm wondering what size to order as I took the plunge like Chris... John Bouyea N5391M/ KR2 OR81/ Hillsboro, OR 2015 KR at MMV Gathering CoHost
... Bosch part number is 11027. More on this is at http://www.n56ml.com/corvair/o2meter/ . Mark Langford ML at N56ML.com http://www.n56ml.com
