Were there more than one style of coil that came with this bike or that can fit on the mounts for it? i have the long looking tube one with two holes, one on each side.. i have now seen some with two holes on the top.. will that fit my bike>? apparently off another z50.. can someone help? also.. will the 12.00 chinese coil work? mine is first one.. next in pile of parts is one off some other z50.. will that fit? then from amazon and ebay.. will those fit??4 thanks guys - BOLTS SEEM WIDER ON MY ORIGINAL.. YES OR NO??