My modification to U wing alt build

A few months ago I built this Captain Rex Y-wing alt build using 2 U-wing sets. I loved it but as it sat on my shelf I kept feeling like something was missing. It felt like there was room to squeeze in a gunner seat so I pulled up instructions for Anakin's Y-wing from 2009 and got to work. I gutted the whole astromech area and rebuilt it keeping it sturdy and true to the 09' original and the MOC. Most of the pieces were from the 2 U-wings and others I had lying around my very bare collection...