Hello.
I have recently purchased a mk7.5 fiesta zetec, and I've been looking everywhere for someone who's asked the question I have but to no avail.

I want to know if parts from the pre-facelift mk7 fiesta (specifically the zetec s) will fit onto a mk7.5? Primarily after the rear bumper or just the diffuser section as I noticed the diffuser section clips into the actual bumper. I essentially want the zetec s rear bumper on my mk7.5 zetec, and the extended skirts as well.

Many thanks in advance,
James

Most people want to fit Mk 7.5 parts on to a Mk 7. The basic bumper shape is the same, as you suggest, you only need to change the diffuser to be Zetec S type (from a Mk 7 or Mk 7.5, whichever you prefer). Plenty of aftermarket diffusers around also.

You will also need the outer "spats" as shown in your pic to match the diffuser. On the Zetec S the bumper has slots to accommodate the clips on these, so most people grind off the clips and use tape/adhesive.

Another popular mod, with a bit more work, is the ST diffuser as here:

https://www.fordownersclub.com/forums/topic/90730-can-you-put-a-fiesta-st-rear-bumper-on-a-zetec-s-140-red-edition/

There are actually quite a lot threads on here regarding fitting the ZS/ST diffuser to Zetec or Titanium models.

Side skirts are the same on Mk 7 and Mk 7.5 ZS afaik.