Hi!
I’m sorry about not updating the status for this long. I opened the engine before I wrote here. 2 valves of the first cylinder broke and explode into pieces shattering the piston.
I have managed to find a 16K4F in really good shape for cheap so I’m going to try to do the swap myself. Worst case scenario I break this cheap motor and learn something new, best case scenario I fix the car for 300£.
Thanks everyone for the help, I will keep you updated as I do some progress!