Hi Mate. I know the engine layout is the same but I don't know if the under-car exhaust path is.
I have a mk5 fiesta zs with the puma 1.7 engine dropped in it. I have a miltek EVO 4-2-1 and a 200 cell sports cat and flexi mated up to my mongoose catback. Fitting should all be a doddle once you have a)removed about 2ft of catback to accomodate for the longer manifold and then the cat and flexi, b) extend your lambda sensor/s and make sure you can weld on plenty of flanges where you have had to chop and change.
Like above, I have videos (for the sound) of
a) just the cat back
b) full system 1000 miles after fitting with 1.6 engine
c) full system with 10000 miles, half of which were done on the new Puma 1.7.
Let me know if you want me to link you up to the videos