Replying to Marker duke pt 16 vs 12 differences

Hi all. I have a pair of duke 16s that are more binding than I need. I like the functionality of the binding but I din at 10 at the highest so I don't need the extra beef of the bindings. I was wondering if it would be possible to get a pair of duke pt 12s and do a "hot swap" of sorts, just trade out the alpine toe pieces and the heel unit without having to remove the bindings from my skis. Does anyone know if there are any differences that might stop me from pulling this off?

Appreciate any help, call me crazy if you want.