This is not a MOC, it's just a mod. A nearly 5-hour, hair-pulling mod that had me several times checking Bricklink and Brickset to confirm whether certain needed parts were ever even made in the needed colors. It all looked so simple & obvious, until I started the actual work. Fortunately I'm no stranger to this phenomenon.
(Edit: As I published this post I noticed a build error in the photo! Cheese slope behind the side window is facing the wrong way!)