Catalytic converter replacement

Hey guys, I got a question here and seem a little bit confused in regard to the catalytic converter. I'm looking online to purchase a catalytic converter front to be exact for this model. But I'm getting two different selections front left and front right. But by looking underneath the truck both catalytic converters are connected to the same pipe. Also, the photos on rock auto show the same exact pictures for both left and right. I'm confused because I don't want to purchase the wrong part. I do shop on rock auto because I don't have much money to throw at a high-quality part. Anyhow I attached some photos here of online just to see what I'm seeing. My trouble code shows bank 1 below threshold so I believe that would be the one below cylinder 1 side. Anyways if you can fill me in that'll be great unless front and left is the same thing, lol.