All pretty straight forward....
E5GDM, looking at getting the st diffuser from European parts, how hard was it to fit ? Have you got any pictures for a guide ? Would be appreciated
Remove the old deffuser by first drilling out the single pot rivet at each end (there's 3 at each end, but only the inner one is for the deffuser),& then just gently pull it off (you can see the clips on the new one).
I clipped the 2 parts of the new deffuser together, then attached it to the car by pushing it on, ensuring all the clips located.
There's 2 protruding 'lugs' on the bottom of the defuser that you hinge back under the car, & using 2 nuts secure them to the bolts already in place under the spare wheel well (you'll see them when you look under the car).
Then I drilled 1 hole & used a self taper at each end (instead of pot rivets) to attach the lower ends of the new deffuser.
Then I cut back the original tail pipe to allow me to attach the tail pipe.