^x2. They serve a purpose, but look ugly, IMO. I took 'em off. lol
They're held on by clips and one screw on each side (driver and passenger), though. No tape. I don't know if it differs, but on G3s, you open your door, remove the small black cap on the inside and take out that screw first. I didn't feel like removing the door panels then, so I just took a flat head to the moldings after that and pried them off. lol Gotta take off the door panels to weld the holes shut anyway, so you're better off doing that. Unless you like sticking your hands in the door afterwards to fish for the ends of the plastic clips. It sucked.
Be SURE to treat the inside of the welds for rust immediately after welding! They rust quick.