Interesting thread.
Here is my seat install
2013 Focus ST3 Seats before:
Drivers seat was torn due to popped airbag, so the top covers were removed to be repaired and relabeled
The fitment in the Ford is pretty strange with brackets coming off the rails in all sorts of directions. I cut them off and measured up the standard rails to make adapter plates for fitment into the VAG.
Adapter plates being cut:
Test fit in the car with passenger seat removed
Test fit on the rails (brackets had already been removed)
There was alot of back and forward to get the adapters fitting as required
Redressed the seats with the new FR logos (my aunt did the work for me and they came out perfectly)
Final fitment
#FRecaroSelfie
Being electric I had planned to hook up the power for the seat adjusters to the ciggie lighter. Turns out those wires in my car are dead (not a fuse issue as far as I could work out). Ill find an alternate power source to make the connection as currently I have a small battery under the seats for the adjustments

I will also research the heaters and
how to connect them correctly (winter and leather seats dont mix).
As for the comparison to the stock seats, these are just spectacular. They are comfortable but hold you firmly in place.