Just left the LX mudflaps on. Three screws hold the steps on, but only two are used for the Land Cruiser rocker panels.Looking good. Looks like you have the front mud flaps on as well - are those unique to LC (I think so), or are you able to reuse the LX ones? If the former, do you know the part numbers?
Part numbers for 2008-2016 models seem to be: 7662260130 for the left hand side and 7662160160 for the right side.