Ok in need the powers if cross reference.  

Say I needed to get exhaust studs for a  1985 vanagon and the friendly flaps counter person had a pea brain that did not function with out their parts catalog because they do not speak metric.  

Which modern car would you tell them to look up to get a m8 1.25 pitch X 40-50mm exhaust stud?

Please refrain from directing me to our fabulous vendors. It could be to late for that :)

Thanks 

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