About this 3D model
These three panels will allow you to turn your Tamiya lunchbox into a full on passenger van. This requires significant modeling skills and is not for the faint of heart. We used a polyjet to print these but a resin printer would work. It is highly unlikely an FDM will work given the details. The link shows the full how-to for the window installation https://youtu.be/BI9SPvynALI