Good news, no need to remove the glass. It is possible to swap the seal/glass guides with the window rolled down. You pry the vertical ones loose and pull it straight up and out, but there is something down at the bottom holding it in place you must break or knock loose first, I forget exactly what it was, plastic snap in part of the WS guide IIRC. I just busted the top and bottom into 3-4 parts (It is very brittle) and that makes it easier, smaller pieces to yank, pry and screwdriver flat blade chisel out out. Then just slide the new one in. The horizontal one I just bent to make it straight so it did not bind anymore, but if it is like my Saturn, it is just a clip on that goes on and off with a pry tool, rubber hammer set, with out taking out the window. But there may be hidden clips on it???