Hello. I have a '67 Mustang (San Jose built) with a 289/2bbl. I am now in New Mexico and want to remove the smog system as I have no plans to move back to California. I did some research and got some plugs for it only to find out that they were way too small for the openings I need to plug. I recently found out that I probably have one of the original thermactor systems and was told to just use freeze plugs with a non-silicon sealant to close those off. As best as I can tell it would require a 7/8 size freeze plug, but I can't find any locally. I'm attaching a picture and hope that helps. Does anybody know if there is a better way of plugging up the hole, and whether or not 7/8 is the correct size? I don't want order something online until I'm assured of what I'm needing.
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