To hell with doin this rear o2 sensor. I used the SD plug/retainer to cap the bung off. Well when we put the headers on I used rtv and gave it hell. I kick myself for it now. But I don't have any standard sockets nor do I have the correct standard wrenches. So off to le store I go. If this don't work, I'll take it to dad and let him do it. It sucks bad enough I have a gravel driveway that's still kinda wet lol.