[HawgRyder]

Steve:
The problem with the front windshield is the size of the glass.
We have no choice when using the original or replacement glass.
The glass is smaller than the opening in the body...therefore you need an "H" section style rubber to fit the window into.
If you purchase an aftermarket Lexan type window...they come in a larger size and can be "bonded" to the body.
In a manner like the new cars...a Butyl rubber seal is stuck to the body...then the glass/Lexan goes in...then a layer of liquid Butyl is applied and smoothed out to make an aerodynamic seal.
There are companies that now make an acceptable Lexan replacement that will withstand windshield wipers and dirt...also they are bullet-proof (or at least rock proof).
Bob