The 3D-model print-file is delivered as a hollow version to make resin printing as easy as possible. I did include a stl-file of a fully supported hollow-model including the extra parts needed. Test printing done on a Anycubic Mono SE (0,05mm layer) using the SUPPORT-Morris.Complete.stl.
Roof can be placed in an open or closed position and there is an option to add a search-light.
The Lewis barrels are a bit thin, so best to print those using flexibel resin to prevent breaking. Or print the barrels at 110%, or better yet, using some metal barrels if you have some.