ok heres what you need:
Adaptor -IM6807137 £17.66
adaptor -IM6807728A £17.66
Towing cover -IM6807928BGRU £4.30
Guide profile -IM6807393E £14.09
Guide profile -IM6807394E £14.09
towing cover is prob already with the rear bumper if its 2nd hand?
this is for the bumper which looks like this:
http://i63.photobucket.com/albums/h130/meeerrrk/RIMG0007.jpg
however, some of the late FR's had an LCR rear bumper (more square, has a black plastic insert at the bottom) but with a exhust cut out in the correct place for a normal cupra exhaust!
hope thats of some
help...