QUOTE(porschefile2010 @ Jun 26 2012, 04:34 AM)
If your existing widnshield is ok you should be able to get it out if you are careful. It's a two man job. I did it a month or so ago mostly on my own with minor damage which I should have avoided but can probably still re fit the old screen with two small cracks to be repaired.
You need a length if fine twisted wire which a panel shop should be able to give you and you need to fit a hand grip on one end. The wire is specially spec'd up for the job and is very effective.
Drill a very fine hole through the sealant by hand, using a small drill bit and feed the wire through and fit a handle on the other end and with one person inside and the other outside just drag the wire around the sealant. It shouldn't take much effort. If it does, back off as the wire may have caught on the plastic spacers fitted into the window surround. Just work gently over these making sure you keep the wire as flush with the screen as possible. Be careful the wire doesn't cut into the edges of the screen.
Once you have gone right round it will lift off. Be careful the windscreen doesn't drop or slide as it is reasonably heavy. Leaving the last bit to cut through at the top might help.
This is a bit basic and there will be others here with a more sophisticated way of doing it, but it worked for me. Good luck.
I would add that you should remove the trim from the interior as the wire will cut it. I usually leave the cowl area alone because it is hard to get at. Assuming you are replacing the windshield, Who cares if it breaks. Get the AA windshield install kit. It has the butyl and the clips. It also has the rear view mirror adhesive pad. When removing the chrome trim, use a single edge blade and drive it between the trim and the body to cut through the plastic trim clips. This will save on bending the trim. You will want to replace the clips anyway. Ask several glass dealers about price. Tell them you want to do your own installation. Makes a big difference. Get help installing. One guy can do it but two people can do it easier.