Convert Evolution Convertible to Coupe

[Cat420R]

How complex / expensive would it be to convert an evo convertible to an evo coupe? Is it even possible?
Is it a case of replacing the rear clams and roof or are other mods required? Has anyone ever done this? Can the Targa roof panels of the convertible be used with the coupe rear clam?

[Cat420R]

Thanks for the replies, I am in the process of looking for a car and agree that there are practical advantages to a convertible regarding cockpit cooling and rear visibility. To my eye though the coupe is a cleaner design so there are positives to both. The reason for my question was because there is a convertible for sale locally and I wanted to understand if a conversion is feasible but it sounds like it isn’t.