Scooby, I had both windshields replaced recently in my MC5A by our local Auto Glass shop. I bought the new gaskets from Luke @ US Coach and the Glass man remarked how great they fit. I think the new gaskets and bead were about $65 each and the Glass Guy charged me $160.00 to install the two new glasses. I wouldn't have tackled the job myself.
If you're doing to do it yourself...you'll need the suction cup holders the glass shops need, a long piece of 1/8" nylon string and a helper. You'll also need to remove the Defroster discharges from your dash (4 screws).
After installing the new gasket the windshield installs best from the inside. The helper uses a plastic glass tool to install the string while the windshield is being placed in the gasket. By pulling the string it moves the outer lip of the gasket to the outside of the glass. Once that's done install the lock bead. Use NO SEALANT!
My best advice....get a good glass installer to do it for you. More than one windshield has been lost at 70 MPH!
NCbob