it seems like a doable modification [i love fab work, and i'm using the "square type" of plastic minivan handles/latches/linkage assemblies on the doors of my 33 dodge humpback panel truck], but you almost need the stuff in hand to be able to see just exactly what will, or not, need to be done to install the parts you want.
if you decide to do this, please take pics and keep us updated on how this works out.