if the front windshield and dash are out of the car/ and or engine its easier to go from that direction than over the fender.
use both cowl vents to your advantage. one is bigger than the other.
Just make sure you put the link rod in correctly. There is a right side and left side.

I had a customer one time istall his his cuda and then wondered why it didn't work. it will install either way, just not function.