different front bumper (top edge has air inlet) and lower splitter. had grilles in place of the front fog lamps
different top rear spoiler (has an upward lip on the edge)
lower rear spoiler fitted
rear suspension had some extra mounting brackets fitted(but not used on road cars)
8 injectors
t4 turbo
bigger inlet pipes
different intercooler
different engine block (stronger)
car had an extra 20bhp on production cars
think thats it!!