Well fellas, one call to Jeff at Deutchmann Automotive will net you the rear window seal and the locking strip, which I believe totals out at less than $200! Not only is he at least 5% cheaper than everyone else, he is also an early A body owner! 419-352-7894
As for doing the job, I do all the glass work my self, and usually by myself, and with a gasketted window the job is not as hard as you might think! I use a combination of plastic body filler spreader paddles and plastic putty knives, and for the back glass on my blue 66, I used 3M black window setting caulk in a tube, masked off the car to keep it from getting on the car, caulked in the body to gasket channel first and pressed that on, then did the window channel and set in the glass! With the back glass, I pushed it forward into the channel that goes up around the top, it pretty much sets itself into the channel on the vertical shelf, and the only area I really had to work it was into the channel above the trunk, which was the easiest place to reach when you're trying to get the rubber to come up around the glass! The locking strip from Deutchmann is enough to do the entire window, but you need to save the corners from your old glass as they dont come with the locking strip! Yea, the 3M caulk gets all over the glass, but is easily cleaned up, and it's black so when it's done it is not seen in the gasket itself! I could've used soap and water like I sometimes do on the front windshields, but I didn't want to take any chances on it leaking and having to pull it, so I put up with the mess and cleaned it up! I think it took me about 2 hours on a nice sunny day, I put the gasket out in the sun to warm it and make it more flexible, then just went headlong at it and got ER dun!!!