Ross, your referring to these two nuts but the ones in the cockpit area?Here is a map of the transmission levers.
View attachment 41810
Since you are able to get to A and B, and not C and D, you need to move the 2 nuts that half in view, up.
Not sure what original builder did with sensor, wideband or not. I have not looked into that yet....other than I am sitting on couch reading about it! Creepy haha!Did you order a wideband O2 system too? Or do you have that already?
Current 02 is a 4 wire. Looks like wide band is 6 wire. So I have narrow band at this time.Did you order a wideband O2 system too? Or do you have that already?