Off the top of my head they are:
Interior:
Red recaro seats (same as the one's in the UKDM 30th ani edition)
Red carpets (these come standared on UKDM premier edition)
Rear tints (these come standared on UKDM premier edition)
Leather momo steering wheel (these come standared on UKDM premier edition)
Climate control + A/C
Satnav (optional extra but most have it)
Exterior:
CW paint (milano red, black and silver also available but are very rare)
CW wheels
Black headlight surround (not sure if these ever come on any UKDM models)
K20A Engine but with 212bhp not 217bhp witch the DC5's have.
LSD gearbox (not sure on ratio's pretty certain there the same as DC5)
Prefacelift are the only imports available to the UK. Model report was never published for facelift imports.
There was also a lightweight version available with out elec windows, satnav, climate control, A/C etc
These are all i can think of, please someone correct or add if ive forgotten anything