July 27, 201312 yr Hey guys, I'm going to try bolting my own combination of things together to build a roof rack on my non-OBS impreza. The roof has the three mounting points on each side of the roof for the OBS rack option and I'd like to bolt my stuff to them but I have no idea what size the threads are. My best guess is around m6 but I could really use a confirmation from someone who knows Anyone know? please and thanks!
July 27, 201312 yr Author I managed a lucky guess at the hardware store: the threads that hold the OEM OBS roof rails down are indeed M6.FYI
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