Catalytic Converter cut, but not stolen - question

Great points you raise. I have definitely thought about the fact that the dealer said they could not work with the original part...yet "it is here and looks in good shape still" (as in still has some value?) Aside from that, I have a MillerCAT SS Cat Shield Complete package being shipped to the dealer to arrive Tues. The woman at MillerCAT said to me that this is the new package with the deadbolt and must be fit on an OEM, as it has been found to not fit well over aftermarket ones, so they only want these sold to go on OEM Cats. I am trusting that an OEM is first put on or I might hear that there is fit issues. So could an aftermarket be substituted with a Cat Shield going over it, so it will be hard to tell if true OEM or not? Does anyone have any info on telltale signs of an OEM Cat that is not on aftermarket ones? If there a Toyota symbol or specific numbering on OEM Cats that I can ask the SA to take a picture of, as well as a picture of the MillerCAT installed before lowering the car. I also was going to ask him to slide the old cat into the new cat's box if there is one. Anything else visible that OEM's have that aftermarket ones don't? Thx.
Here is the MillerCAT with deadbolt: https://catshield.com/collections/cat-shield%E2%84%A2-by-millercat-stainless-steel/products/stainless-steel-millercat-2004-2009-prius-gen-2-cat-shield

 

I sent you a separate note.

 

The new OEM Cat was installed as well as the new MillerCAT Shield with the deadbolt clamp. That OEM Cat looks so nice, but the MillerCAT Shield on it looks even better.

 

I just rec'd the requested receipt of work done. It lists all work done, incl the $350.42 they charged me to install the MillerCAT Shield that I had already paid $360 to have shipped to them from the Bay Area. So the MillerCAT + install set me back $710. Not sure if the part #s, along w/ name of the parts listed would help identify if OEM or not, but I was told it was OEM by the SA. Is it possible that the numbers or logo are on the part facing up, or on the front section of the Cat not in view in the pic? I know the insurance would absolutely want to know if they were charged an OEM price for a non-OEM part! Unless proven otherwise, I have to go on the faith of the SA at the dealer that stated an OEM was being put on, and that it actually went on. Anything different is fraud, of course, but I am in no way saying that has happened...unless someone tells me otherwise. Thanks.

 

Just did a search and found the following link: 17410-21500 Genuine Toyota Front Exhaust Pipe Assembly It is an OEM part, and the "retail price" listed on this site is identical to what was charged on my invoice.