Header Bolts

[Brent Meints]

Does everyone here use standard manifold bolts when installing a header?
A shop here said that you usually need shorter bolts as headers are
thinner than the stock manifolds.  Also, I have an AEBS header and
should I use the Nissan gasket or a copper gasket.  With the AEBS header
the O2 sensor needs relocating but I don't have the harness that AEBS
sent with the header, so I need to lengthen the O2 sensor.  Can I use
regular wire to lengthen each wire, or so I need a certain guage wire?

Thanks,
Brent