I run my auto meter directly in my x pipe, might not be the perfect spot but it works.
Is as basic as most say...weld in the bung tilt it up a bit, if all is cold let the unit preheat until you fire it.
This is a simple vid, not worried about ide ect...just wot but with a six pack and spray its needed.
Im surprised for the minor cost 3-4 hundred more people dont have them...
Dont be afraid of the wide band units.
http://www.youtube.com/watch?v=1JjBce4OyxoWOT wideband test..
http://www.youtube.com/watch?v=_Za7lfxoDFc