Wiper Help....

Here's how @retroron did his Dodge Neon wiper motor. Mine is very similar but had to be moved closer to the drivers side to make room for the AC condenser.

View attachment 1715222121

I'm trying to increase the amount the driver's side pivot turns. At the same time I don't want to the passenger side to move further.

Riddler

That's why you need to move the pivot point on the drivers side in closer toward the wiper pivot point, and not change the arm on the motor.
Changing the arm on the motor would change the drivers side wiper travel as well as the passenger side.
An arm pivot point farther away from the wiper pivot will give even less travel of the wiper than you have now.