Checked out good prior discussions, and lots of opinions on which windshield rubber to use. Mine is due, the 2 piece flat. Also checking on new glass, and if it can be cut locally. And paying attention that is has to have the "slot" rubber for the exterior stainless trim. (Which may be difficult to remove, stuck in the old, dry hard rubber.) Questions, not only on the fit of the rubber, but on the wide range of prices and what you get. It could be a roll having a seam, or a 1 piece. The less expensive rubber seems to be the perimeter of the glass. The one that cost much more says it has the center divider bar. Being 2 piece, isn't that center section necessary? Why would you replace the perimeter, and not where it seals in the center? Or does the product on a roll also fit the existing center bar? If one piece, with the bar, then the rubber has to be pre-mounted to both sides. Tales indicate using the string/rope from the inside. With sealant. I'm hesitant about this being a DIY project. Thanks.