I was just wondering what the best place to install my wideband o2 sensor would be? I am planning on mounting it permanently and can deal with the fact that I will probably have to replace the sensor yearly. Can I just put it in one of the bungs for the post-cat o2s since they are already tuned out? Or should I have a bung welded in pre-cat right after the pre-cat o2s? Which bank should I install it in? Driver side or passenger side? Thanks!