emission heads causing problem for tri-y install

just got in and check email. my buddy works at a parts store and when they bought out napa they kept there stuff and in the back was a cabinet full of plugs and wouldn't you know it there were some 1/2 fine thread plugs with allen heads. i test fit one and they work great. thanks alot allcarfan, i really appreciate it. oh yeah soon i will be needing some powdercoating done and you are not to far from me. about a 100 miles. thanks again