It is possible to get the tardis interior to work on any map (with enough space in the actual map). Using the displacement cannon addon set an exit portal in an empty or high space in the map (use a prop to get the exit portal high up) then simply set the cannon to send whatever it shoots to the exit portal. So simply go into the tardis and shoot anywhere on the inside and it should move the interior into the map. Then you should be able to use the tardis normally. Hope this helps a lot of people :D

Displacement cannon (watch tutorial video): https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=159271441

Also remember to remove the exit portal when you're done.