I think what I am going to do is use the bonding adhesive that Eastwood provides since I have already formed the lip for where the patch panel will rest....everything lines up ok and I have attached the rivets already (drilled the 1/8" hole)......I wish my dad would never have added this sunroof but oh well s*** happens right! Just wanted to get a gauge on welding vs bonding adhesive....even here in florida the glue should hold up...it says that the adhesive is good up to 250 degrees fahrenheit