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Message: <blockquote data-quote="mech4matsnova" data-source="post: 529739" data-attributes="member: 10040"><p>Does anyone know what size bolts are on the stock header flanges, what size open end wrench I will need for the o2 sensors, and what size bolts the o2 sensor bracket? I have done this swap before, but its been a while and I wanted to make sure I have the right tools before I start. Im working with a limited set of tools this time, dont have any of mine. Im trying to avoid bashing my head against the wall trying to do this with almost no tools. :BangHead: Also, which way does the gasket go on the passenger side manifold, ring up or down? Thanks for any wisdom anyone can provide.</p></blockquote><p></p>