I wasn't happy with the fit from other designs, so I started from scratch. Wait, that's not true. I wasn't happy with my own design, so I stole it from myself and modified it. Don't tell me I did that or I'll never hear the end of it. If the door panels don't want to fit over the front edge of the rear panels, add a washer under the two rear screws on the doors. 

I now have laser cut aluminum and titanium versions of these parts at Freyja's Tiny Trucks.