Make sure you do all of these steps or it will not work!

Installation:
Download and install addon props and place both prop files in

Grand Theft Auto V>mods>update>x64>dlcpacks>addonprops>dlc.rpf>props.rpf

In the props editor, set the LOD to 500 and textures embedded.

The XML document in the "Menyoo map folder goes into GTA V>menyooStuff>Spooner

Go into manage saved files and select "load placements"

The model was done by Shane K. on Sketchup
Model textured by me
Superman fortress of solitude item extracted from DCUO by me