I think we may be speaking about two different things. I'm talking about taking out the reverse lights along with their reflective housing. Those two assemblies are removed by taking out a couple of screws I believe and just pulling them from the center panel. I'm not talking about separating the panel to get to the lettering section.
I thought if the Jspec has reflective housings, and the US spec does not, then maybe I can remove the Jspec housings and just plug them into the US spec ones. Please see this picture and let me know what you think; https://postimg.cc/t7nYX23s