O2 sensor mounting

[Dave Williams]

-> I just picked up an 18mm nut from the hardware store today for my new
-> downpipe. Can't get much simpler than that.

 Driving several hundred miles to a hardware store that had metric nuts
would be a hassle, though.

 Metrics in hardware stores.  It is to laugh...  <sigh>

 When I need metric fasteners I call a friend in Colorado, where every
hardware store seems to carry an enormous supply.  He then mails them to
me...