See below pictures of what a NOS late RHD box looks like. Matty has posted a picture of the currently available LHD repros.
Forgotten about that. From memory, the adjuster locknut has a rubber seal on it, although this may be built-in.
Might be an idea, im going to slightly alter the opening post to make the dust seal an option as they are hard to get and the most expensive bit and i guess most wont need one
Yep, ive ordered some to go in an EB kit if anyone ever sells me a box, wont offer them in the LB kit because if people start popping them out of the nylon bits i will get shot for bad practice but if anyone wants them
Once I've got ours out next week, I'll post a pick of a LHD OG so there is no ambiguity as to what is OG or repro on import buses. I'm sure @Keith.H will be able to sort out a seal kit regardless