So you mean the XR headlights???
I've put them on my EA... they bolt straight on (except you have to drill 2 holes for the top bolts on the plastic cover). Also, you'll need to remove the ford badge from your bonnet (to prevent having 2 of them).
They cost just under $1400 brand new from ford, or you can usually find some for around $700-$800 second hand. and, of course, you'll have to paint them to match your car...