AK49BWL
GMT400 Forever!
definitely don't use the NBS box, that thing is impossible to customize. At least the OBS box, you can add your own terminals and wires into for more fuses and relays. Or do like I did and get yourself a GEP 96-position box for MetriPack 280 terminals and have full customizability + waterproofing with ISO280 relays and the same MicroFuses the 95+ OBS trucks already use.