Hi again,
Seems you are busy with the planning ;-)
I was looking for a build thread for a guy that fitted Ecoboost 2.0 in his newer Fiesta.
Instead I found this thread, an older Fiesta getting turbo kit:
https://www.fiestaturbo.com/forums/f...d6ac3&start=35
There isn't much spare space in there.. lol. reminds me of when I retrofitted turbo on my Corolla 2.0D back in year 2001. Some of the bolts in mine took about 15 minutes to put in and tighten, as there wasn't any space left against the firewall.
Cheers,