XV engine swap

Hi there,

My turbo recently gave up and more investigation is required to check the sump for any white metal from the crank shaft and main bearings as a precaution 🥴 excuse my lack of knowledge on engines but this is what I’m told by the Subaru garage.

Anyway, I was thinking if it leads to more than just a new turbo required and going to cost a fair bit then it might be a good opportunity/good excuse to swap out the engine 😬

Its a 2016 XV 2.0 turbo diesel. 
So, what I was thinking was SORN the car and convert it to petrol (toying with the idea of a rally car). Now I know it’s not just as simple as engine out, new one in, even when it’s same fuel type. 
 

My main question is, would a 2015> 2.5L STI engine fit in the 2016 XV engine bay?? I’m guessing both models have the same chassis and hoping that it’s possible 😅
 

Any feedback would be greatly appreciated.
Thanks in advance!

Mark 🙂