@Mytran - Yep those markings on the E-A.
Disclaimer - I don't completely think that the internals/flight deck we see in the E-A from "The Final Frontier" make sense and I'm very willing to discount it as an alcohol + bean dream rather than an actual adventure
As to the red rectangle on the E, here are some more views. I am using Sinclair's exterior schematics for placement of the hatches.
I also added the hallway seen in front of the Engine Room and added a few feet more between the turbolift and the forward hull to give room for the long range sensor gear and structure. Interestingly and unintentionally, the amount of M/AM reactor space is about the same that ended up being available on the refit-E...