Great job Izzy, I'm currently working on this kit too. I was wondering if anyone has a good pick from the top down showing the shape of the compartment that is left when the battery is removed. All the pics I've been able to find have the tank in place and it's difficult to guage how deep to make the new compartment. I've got the battery shaved out and I'm using a similar looking tank from the C5R kit for my project.