What % tint do i need to match the front 2 windows to the rest of the truck?

[fore-runner]

Doing the whole windshield would be a nice thing to have but it may be a safety issue. How well would you be able to see at night? How dark would you go if you did the whole windshield?

 

[Clemsonfan15]

Tinting the windshield doesn't affect night vision that much.