The front splitter mounts to the headlight supports, and the frame. It requires you to cut your front fasciain order for it to mount flat. Also, the cable mounts mount to HUGE frame reinforcing pieces where the tow hook mounts, etc. It's not a reasonable mod for a street car - as you have to extend the front frame horns in order for it to work as on the Comp Coupe. Now - it's possible to forgo the cable mounts, but not sure how much (if any) downforce it'll give you. Of course, the COmp Coupe splitter isn't a huge downforce creating piece anyway.....
Wing - same thing - it mounts to a HUGE reinforced frame section. Mounts are what would be in the trunk and without reinforcement, any downforce would most likely seriously damage the trunk.
Hope this helps.