Thinking about push bar and sidesteps/sliders (probably wrong terms) for our Lr3. If we upgrade to Lr4 in the future, can I switch the mods over to the new truck? (same wheelbase, mounting points etc etc)? I might as well ask the reverse too: I'd love to put an Lr4 steering wheel in my 3. And maybe the door pulls and radio/hvac . Maybe I'm getting crazy here.