The manner in which you stated this fact and remarked no matter how good you make it look it will NEVER be an RS suggests to me that you think that the RS Turbo escort is a far better car and something to aspire to which amused me greatly. It made no difference that the fella in his original post seemed to be aware of this as he called the car an XR3i

its also a fact that everyone is aware of !!

Its like the fact that Ford never made a Focus Cosworth however the people who have done this conversion call the conversion a 'Focos' its a common term for the these types of cars.
Likewise a RS turbo powered cabby is commonly known as a 'RS cabriolet'