You need these tools:
Self-tapping rivets.(REMACHE)
A drill.
Rubber Moulding 10mm to avoid damaging the bodywork.
3 Tools like this (TORNIQUETAS).
* 1º We take the wheel arch , we put the trim to the wheel arch , not to grate the bodywork
* 2nd report the front wheel arch of the car, we take the three TORNIQUETAS , first in a corner , then another corner and down the top center.
* 3rd Once attached to the body with TORNIQUETAS , you go without fear and squeezing slowly ( fiberglass does not break ) first corner, until you can make a hole with drill marking .
Then do the same with the other corner and at the end , do the same in the top center of the wheel arch .
* 4th Already have 3 holes in the wheel arch, now you have to do the three rivet(REMACHE) sized holes, so that this becomes subject.
*5th We already have 3 RIVET posts, now you have to repeat step 2-3 and then screw the 3 screws.
We already have the wheel arch subject. If you want to be placed more RIVET but three is enough.
It is easy, but has to do so without fear and gradually to fiberglass go opening.
I hope I have helped and in the end you can place the wheel arches.
I say that if you can because I've been more than 3 years and have no problems.