Years ago I replaced the windscreen on my 1986 car by simply getting a local auto glass company to cut me a new one. The whole process was dead easy although I did have to make a new screw block from brass rather than alloy. Reassembling the screen was far easier than the articles on GoMog made it appear, although at the time it didn't raise any suspicions.
Once all back together it worked fine apart from leaking water around the windscreen seal in very wet weather. A few months later I was at Steve Simmonds having a new hood fitted and mentioned the issue to him, he then pointed out that the Morgan windscreen glass is actually a bit thicker than the usual laminated glass that most outfits carry in stock. Fortunately he had a spare screen and fitted that for me and it's been fine ever since.
One the subject of stone chips, don't be afraid of having a go at fixing them yourself. I suffered a stone chip in my windscreen a couple of years ago just before setting out on a trip to France. No time to get a glass repair company to look at it so I grabbed a kit from Halfords and did it myself. a very simple process that worked very well, although the big thing is to do it immediately before any dirt gets in there.