That one was me. After I got a better quality image including the underside, I did a second version, based on the cargo hatch size (5.5m x 5.5m) which downsized the ship from Anaconda to Gunship class.
https://pbs.twimg.com/media/DLtUz6lXUAM98ln.png
That's a really cool image.
I've noticed that there objects on the rear narcelles that i believe to be rear landing gear. I reckog the forward two purple squares are the bottom are also landing hear... but it could be weapons.