I have a friend who does custom body work, how hard would it be to put mondeo/contour 98+ headlights in?

Would we have to cut both the hood and bumper?

5 speed MTX /KKM Custom Intake /Dynomax Super Turbo /TH Fix /Audi A6 Sidemarkers / Badgeless /Audio:(JBL600.1 amp,Polk Dx Subs, Infinity 6953i 6x9's, Lightning Audio Strike Cap)