72 down front clip swap

Ok so I have a 1973 Duster I just bought a 1971 parts Duster.
What are all the parts will I need to swap the front clip of the car to a flat nose.

I have the

Doors
Fenders
Hood
Bumper mounts
Hoot latch assembley

I know I will need a grill and a Bumper what else will I need.