simple. mine has 4 bolts, the jdm has no bolts,, it has 4 slide in inserts

 

?como?

 

 

sorry, ill 'elaborate' (hehe) i have an ef9 (sorry not an ek9) and i did the whole front end conversion to the sir. the only thing i need (tailights and the whole nine yards are done to exterior) is to put the jdm rear wing (spoiler) on my ef9. mine has 4 bolts on the bottom of the spolier that go trough the hatch for some nuts to hold it on the other side. the jdm spoiler o got has 4 plastics that have a slide in part but not studs. there are no studs on the jdm one. how do i mount it.