The best thing for you to do is go to Home Depot or Lowes or for that matter Staples and get you a piece of foam or cardboard, preferably foam. Use it to make a pattern for the glass that fits within your window frame up front, and the sizes to fit the side windows and rear window. You can then take that or send that to a car glass manufacturer in your area that can cut you your glass or look on the internet for a company that provides antique auto glass or services the hot rod industry and send them the patterns. The original glass in our cars was not safety glass and is very deadly to use today which I'm sure you were not going to do. But even to ship it would be hard with it being so fragile. My car had all but one of the original glass in it that was not safety glass. It's over at the restoration shop now and he's going to get the glass cut for me and put it in the car. Maybe one of the DMAC members can tell us whether the M2 glass would be the same as the Model 65 glass? If it is, when I get to that point of the restoration, I can get you the name of the glass man we are using and you can contact him to cut you some and ship it to you.
Where Are You From? Oviedo, Florida
Do You own a car built by Durant? 1928 Durant Model 65