Correct names for parts

Recently bought a 2021 Trail Edition and immediately had the dealer install the TRD Sport Exhaust and the TRD skid plate.

What do you call the section of the exhaust that was replaced with the TRD exhaust? I believe it's everything behind the catalytic converter.

And what do you call the part that was removed to install the TRD skid plate? An underbody shield?

I am going to list them for sale but don't know how to name the parts. Is there any demand for either of these items?

 

That would be the exhaust and skid plate

factory non pro exhaust and
Factory non pro skid plate. That’s basically it

 

Picture 1: OEM muffler and tailpipe or OEM catback
Picture 2: OEM front skid plate and radiator splash shield

At least that’s what I’d call them

 

+1 This is the way

 

Thanks for the replies.

 

I don’t know where you are located but I may be interested in the exhaust.

 

I'm in Atlanta. Where are you located?

 

Since my account is new, I have to wait 5 more days before I can post the items for sale.

For now, I guess you can PM me if interested. Thanks.