Adding Shells

Head to sn_properties > shared shells.lua

Inside you add the following replacing your model the size of the shell and the offset to the front door

{
    model = 'sn_trailershell',
    size = 'medium',
    entrance = vec4(-1.336949, -2.045746, -0.469788, 174.630737),
},

For getting the door offset you could use: https://github.com/loaf-scripts/loaf_offsetfinder