i used the super heavy duty doubled sided tape and it only held it on for a day, wtf?lol
ill probably buy some today so atleast i can have my lip on at the meet tonight, than im thinking of silicone glue or ill buy the kit from Corky

 

I got mine through a shop that supplies many of the local body shops their supplies. At this shop you can get everything a body shop uses and needs from various brands of automotive paints, to spray guns or whatever. Anyway, I'm in Hawaii so it will do you no good, but just ask any local body shop where they get their supplies from. Perhaps even the local body shop will sell you some if they have what you need. My body shop guy was the one who turned my on to it.

There are many different brands and types of adhesives that do the same thing. Some are two part, some are single part. I used the one that is sold in a caulking tube and applied via any caulking gun. I think you can even buy these things on the internet. Anyway, here is the side skirts I used them on.