Is there only one sort of IK27's, ie if I get the ones below will they be OK on a Cosworth
I know some people don't like them but I want to use them
http://cgi.ebay.co.uk/Spark-Plugs-De...3%3A1|294%3A50
I know some people don't like them but I want to use them

http://cgi.ebay.co.uk/Spark-Plugs-De...3%3A1|294%3A50
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