Okay here goes I'm sure this has been covered but I'm going to ask anyhow cause I'm frustrated with this truck & need help. 2002 Dakota R/T I'm getting codes p0138 & p0158 which if I'm not mistaken is both down stream sensors. I crawl under it to screw in new NTK's & find the following. Driverside has had the plug hacked & the sensor is screwed into the pipe & butt connected the passenger side has a plug in the pipe & that sensor is plugged in & wire tied to the harness. It looks like based off the welding that was done that my converters have been gutted & they sound hollow when lightly tapping them with a wrench. I'd love any advice on how to proceed with this. Thanks in advance