I also plan on changing both 02 sensors out with the catalyst. At this point everything upstream checks out good. So I’m honestly hoping the new sensors and cat will be the solvation to the code coming back.

Ok so
cleaned out the Cat and surprisingly it worked to stabilize it because it was fuel soaked and not damaged I lucked out on being able to clean it out. I just used a garden hose and simple green soap in a bucket and then used my vacuum / blower to air dry it out before putting it back into the truck. But it still has the fuel rich condition. Surprisingly enough I found a simple and ingenious way to check the fuel regulator on the vehicle using an air gun. and will post the link.

Here is the link to the video.

It actually worked. Sprayed the face of the fuel pressure regulator with air and fuel mist was expelled from the vacuum hole proving that the vacuum diaphragm has a pin hole leak. Next step is to replace the regulator sometime this week and see if that solves the problem.