Re-posting this here as well.
I Finally got the 2015 coyote engine after selling the 2011 engine i had picked up. I'm noticing a few difference but one seems like it could turn into a real problem. I'm hoping I'm wrong. i don't see this part at the back of the engine in any photos or referencing in the installation guide for the coyote for the 33 and i didn't see in on the 2011 engine that i had. What is this part and do i need it. It seems like it would cause an interference to the firewall. In the manual it says that the fit back there is so tight that you might have to grid down some of the bolts and if that's the case i don't see how this engine will fit since this part sits proud of the back of the engine. Any help or incite will be greatly appreciated.