I have the top in the masterbundle folder I created
C:\Program Files (x86)\Steam\steamapps\common\Unturned\Maps\Leafdown\Bundles\Leafdown\Items\Shirts\Biohazard_Leafdown_Top
and since the decal didint work at all I moved it back to where I orginally had it
and I don’t have a .unity3d for any other items, just the decal
EDIT:
Whoops, actually I moved it to
C:\Program Files (x86)\Steam\steamapps\common\Unturned\Maps\Leafdown\Bundles\Objects\Decal\Leafdown_Decal_Company
I also used these tutorials for the decal and clothing, in case they’re out of date