Custom assets and objects for map making?

[Neurological]

No i'm using Modo 401.

160 units what is that in meters, 1.6 meters? If yes them the walls are really small. A real world normal wall is 3 meters high.

160 units 3dsmax grid. I've used one of the mansion walls to get the proportion, no idea if is cm or anything else, my exporter doesn't convert units when exporting, so what I get on max is what I get ingame.

If you want I can send you an obj I did for human proportions, so you can use it as base.