Call brickboard sponsor RPR right away and orger a set of clips ($17)

When they arrive, remove the chrome trim. Then you'll see what Don is talking about -- and, have the replacement clips at hand.

the "U" refers to the fact that the clip clips over and under the glass at the edge of the windshield. that's all.

The seallant the shop was talking about is urethane. Most auto stores carry 3M windshield sealant. It's a black glue. Most cars today have their windshields glued in with this stuff because it actually lends integrity to the crush-resistance of the body in event of a roll over (That is, the windshield is held in place long enough to have provided some "roll-cage" assistance) It is about a 12x improvement over the buytl-rubber caulk your glass has "holding" it.

Nowadays, this caulk is not uses, or, when it is, it is used as a backstop for the urethane, and a set-off for the glass to get it positioned up off the body a fraction of an inch.

Anyhow, the shop is trying to tell you when you remove those old clips, you may leave behind some gaps in the old caulk, where new leaks can start. Sounds like they want you to "butter up" behind the clips to prevent this.

You can use silicone RTV for this. The urethane only costs about $12 a tube, but it is a tube as large as any household caulk in a caulking gun would be. Best solution is, of course, to R&R the glass, using the urethane as the real sealant/glue. You will likely find the old caulk is dried and cracking. Removing and replacing the clips may worsen this condition.

When I replaced the cracked glass in my '84 GL junkyard project (with a good piece of junkyard glass), I used both the buytl-rubber as a "dam" and forced the urethane in along the edge of the glass. I could not get into the bottom edge. I believe the right way to do it is to apply whe glue onto the glass before your set it, not after, as I did.

But, you have to know where it goes onto the glass to do that. (I didn't).

So, the buytl-rubber caulk will have to keep out the water along the bottom edge.

Also, do a web search for "windshield replacement". There is a site or two that discusses the methods and urethane product I mention.

If you have to remove your old glass, make firends with a piano tuner or teacher in your town.