Headlight conversion

Wanting to put the 94-99 headlight/markers on my truck, got the grille already but do the headlights bolt up or is the core support different?

headlights and parking lights are the same, corner lights and bowtie are different. the grill shell bolts will line up on top but there is nothing to bolt it to on the bottom, so i just put tie raps in mine. works fine. you will also need the lower grill panel and bumper brackets.

thanks