Jamo -- that's awesome and yes, very useful, very much still in the research/ pondering the best way to do this/ phase.
My inclination is to make the the replacement radiator go hand-in-hand with the HGW PE shutters. Bigger question is whether to completely replace the wing center section, or, is the required surgery going to be easy enough?
If anyone has a broken or abandoned LVG kit that they could spare the radiator section for some experimentation, that would be helpful...