Hello, I'm new to the ford forums. My mum recently bought a 2015 fiesta titanium x 1.0 ecoboost 5dr, which recently got stolen

, so currently in the process of purchasing another one with the same spec, just a different colour, and the bigger 17 inch wheels.
I recently had the idea of converting it to a 1.6 ecoboost, from a st180, but can't seem to find any step by step guides. I know I'll get some comments suggesting the idea is silly, and 'just buy a ST', but she wants a 5DR high spec fiesta without the st bodykit ect. I come from the classic mini scene, where anything is possible, within reason. Engine conversions aren't laughed at ect, but found people on certain facebook forums act as if the conversion isn't possible, or people say they have done it, and won't help. It really is a joke. :/ All I want to do is put a fiesta engine into another fiesta.
I would like to know what's needed for the conversion ect.
Thanks for reading my rant.