GMCPaul's windshield install
 

Here's GMCPaul's windshield install instructions. Thanks!
I'll give you one hint where the gasket came from Glad you had a smooth and uneventful install!!!!
Heres the directions for anyone interested in doing it yourself.
Remove original windshield by cutting rubber on inside all the way around and push out and dispose ( far nicer than trying to pry it out with hole seal intact and it breaking and making a mess to clean )
After originals removed thoroughly clean flange inside and out where rubber seal rests and file off sharp edges to avoid tearing new rubber on install. Have new seal in a very warm area so is extremely pliable, lay new windshield face down on carpet or similar material and apply weatherstrip to glass, place a chalk line string ( available at Ace Hardware, Menards , Lowes, etc... ) in channel of weatherstrip where cab flange sits when installed leaving a small loop sticking out at the top center of rubber and other 2 ends of string sticking out bottom center, tape the top string loop and the ends of string at bottom in place to hold, then apply thin coating of vaseline to inside edge of weatherstrip that will be exposed on inside of cab when installed, coat cab flange opening with windshield chaulk and get assistance to lift windshield and place windshield in place from outside postioning upper angled corners in opening first then have someone inside cab begin pulling chalk string loop on one side of loop towards top corner while assistant outside cab applies light pressure to glass following progress of person in cab pulling the string, then work the opposite side top, then work string down either side, then pull center 2 ends towards outside bottom corners one side at a time. I find it works best when doing center bottom towards outer corner to grab end of string I worked from top down with one hand to prevent it from moving then I pull the end sticking out at bottom towards the corner, after seal is fully installed apply weatherstrip cement under outside edge of seal, then wipe down exposed area of seal inside and out to remove any vaseline or caulk on seal with acetone on a rag.
Slow and easy and a warm enviroment are the best when doing install.
GMCPaul

Here's for the trim:
Install trim in rubber seal and make sure its fully seated in its groove then install rubber on glass and again make sure trim stayed fully seated in seal, then install windshield. Deluxe windshield seal with trim always use a 71-72 seal with 71-72 SS trim, and 67-70 always use a 67-70 seal with deluxe trim.
GMCPaul

Any tricks to that 1st part, "by cutting rubber on inside all the way around"?

Seems to me like the old wire and two handles trick, might nick the glass and be tough around the bottom.

Forget the "cutting it out from the inside" part........just get your utility knife w/ 2 new blades and just cut it out from the OUTSIDE.

Just did mine today.....took less than 15 min. and the windsheild is perfect.

Just did the install today. Couple of tips in addition to GMC Paul's excellent instructions:

Cutting the old seal off from the outside works, as 72C5 says. Quick.

5/50 parachute cord works well for the string. Make sure you tuck it on the inside of the channel, as that's the side it will be coming out of.

Save the caulk / silicon for after the install. It will just get smeared all over if you put it on the flange before the install.

I found it easier to rest the bottom of the windshield on the cab flange first, then tip the top into place. Start at the top with pulling the string as your assistant applies pressure. Do one side, then start at the top and do the other side.

Make sure you fully seat the windshield after installation by slapping the windshield with the palm of your hand. You'll feel / see it seat. Then work the weatherstripping all the way around, inside and out, to make sure the seal flanges fit well and aren't kinked under.

Seal with silicon around the entire windshield after the install.

Chris