72 Swinger headlights

How do you change the headlights on a 72 Swinger? This is what it says in the manual:

"1 Remove the headlight bezel.
2 Remove screws from interior retaining ring,
and remove ring. Do not disturb headlight aimer
screws.
3 Pull out sealed beam unit and unplug con
nector, pulling straight off.
4 Install new sealed beam unit.
5 Install unit retaining ring.
6 Aim the headlight and install headlight bezel."
This all good. But there's a grill in the way. Do I have to take the grill off?
See pic
And do I need to remove these "plugs?" See second pic.