Wazzup

Has anyone fitted the swaybars, both front and rear, to their car? Is it an easy job or should you get somebody to do it for you?

I have just removed the rear spoiler from the back of my XR to see how it looks. I plan on leaving it off a while so I was wondering how to go about blocking up the drill holes temporarily? I have heard that rubber grommets are the way to go but the only ones I have been able to get are just that bit to big. Any ideas will be much appreciated.