That metal baffle is removed. Banged it out for a while, but it is out. Those 2 holes in the back don't do anything but back pressure I believe. So that plate will stay. It is about 1-2 further back than where the exhaust header exits in muffler.
I also cut an extra inch off the end cap pipe on the inside. I decided not to make the exit hole bigger so I can keep some back pressure.
Hopefully I can get it welded back together by tomorrow or the weekend. I will let you know results and post video of sound.