I got a 99 coupe.. I ordered my mugen V2 on ebay... installed it myself
At first I had hard time placing it on my bumber..then one day i went ballistic...I had my whole front bumber in my basement ..sanded the edges and it poped in like a glove.
If it looks like its missing just a bit .. you got the good part but you gotta sand the bumber edges to make it fit tight.
First remove your bumber..lay it on something so it wont wabble around, if you look carefully you got two predetermided grooves on the stock bumber- use a drill bit of the appropriate size and drill away
sand bumber edges just enough for it to fit in and get yourself some of those selftapping screws ( normaly comes with the skirts) ..stick that screw into the hole u just drilled and with a philips screwdriver screw it it from the inside out. remove the selftapping screw and put in at machines screw with washer and nut and there you go you just upgraded ur ride
Take ur time and be patient ..it's nothing really and you would be saving a buck or two
gl