istalling recessed headlights

I have a 94 chevy pick up and I am attempting to install a new grill and headlights. However I ran into trouble because the original headlights are
not recessed. Is anyone able to tell me what I need to do to install them?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.