No the difference in minimal. How are the felts that glass runs up and down in?. That stuff can be bought no problem. Does the back window slide up and down or stationary? The windshield goes into the frame with a cork packing. Could use other things now been out of it too long. I'd leave that to the glass shop to put it in the frame. Everything else you can do. I wish you lived closer I'd love to help you.
The old man and I replaced all the window packing and felts the door windows run in the back window and side windows are frame mount same as windshield. Had it all apart before just so long ago and I was probably only about 15 years old.