Well my problem was definitely the total destruction of the Front Catalytic Converter! Which sent all of itself into the lower CAT thus plugging it up and causing to much back pressure. This is what caused my engine to not be able to rev over 2k rpm while driving.
I will be replacing the Front CAT, but lucked out that the Lower CAT is not damaged worst then it probably could have been.
I still can't believe how the Front CAT just Melted and fell apart!
So still some work to be done, but I am glad that the problem was found and I learned something in the process.