another option (though possibly less desirable) is to cut them so that they sit JUST right on the body and then mount them with stainless rivets or screws kind of like truck flares or carbon flares the Z guys run....
My majorly huge hand-made Focus RS replica build:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
My RS conversion is For Sale: http://www.focusfanatics.com/forum/vehicles-sale/578185-sale-rs-mk1-conversion-2003-focus-svt.html