Samsung LDU (Demo Unit) – hardware difference?

It is well known fact, that demo units have no modem/baseband and RF parts, so therefore can never be used as phones.

Except the PCB: Is the hardware of demo unit, especially the housing/antennas, the same as from real phone? I.e. if I would install a real full phone PCB into the demo unit’s housing, would it work?

Please only reply if you have seen/disassembled a demo unit yourself, not if you are some "10000%"-guy.