It is metric thread pattern. I installed a b&m t handle shifter on my 01 6sp. B&m has a kit that will convert different thread sizes to there shifter thread pattern but not metric. All you have to do is take a die to your stick and re-tread it to match the next closest size which i think was 5/16th or 3/8th. you can see mine under the album (work in progress). Hope this helps.