the front panel sits between the inner wing lips and the outer wings, you can cheat somewhat as alot of people will tell you if your working to bonus. by cutting through the front panel along where it joins the wing really neatly i might add. then cleaning the underside then sliding the front panel under all 3 layers. it does look perfectly fine when done neat! as i've done my fair share when the mk4 esc was fairly new. there is a bead of sealer that runs along that joint anyway that hids the extra layer of metal. doing it this way you don't have to remove the wings and therefor looks original if spot welded back on