Hi guys, back again pestering

I've got a gx Blobeye Wagon but thankfully have been lucky enough to get hold of both rear spoilers from a WRX. Hopefully going to enlist some help from my Brother this weekend (well that's what he's there for ) so thought I'd save us faffing, whip the crappy little spoiler off and clean up any left over adhesive so we're ready to rock and roll with the new one.

But no, it's not held on only with adhesive, the piddly little mega light thing is pegged in in four places! Couldn't believe it! Does anyone know anywhere that I can hold of some blanking grommets or anything similar to fill the holes up? Three are oval and one is circular! I think 90% of the two outer ones will be covered with the new spoiler, but the other's are going to look cack if I have to start faffing about with filler.

Any help would be greatly appreciated feel as if I'm encountering issue anfter issue with these mods, might just buy a Seicento and have done with it!