Is anybody familiar with "gluing" on patch panels?

Mopar muscle just did a great article on wheel well and quarter replacement..They suggested placing the panel on top of the car and then cut through both panels at the same time to get a perfect fit...also had great tips on the stitch welding to avoid warpage...check it out..I'm sure they list the tech articles online if you don't already have the mag( it has a pic of Dick Landy's white challenger drag car on cover)