Everything will have to be removed from the front. The reflector assembly will come out as one unit and is secured by 3 mount points. The 2 adjustable mount points can be undone by removing a screw in each, but the 3rd will require separating a ball and socket joint.
The 2 adjustable mount assemblies will need to be swapped over.
You'll also need to remove all the pins from the electrical connector or do a lot of splicing.
It's a big job.
