24.With the visors assembled and ready to go, I installed the headliner board. The best way to line up a headliner is to use your fingers. Put a finger in each visor hole of the headliner and then push your fingers into the holes in the cab. The dome light assembly will hold it up in the back, while the visors will take care of the front. Since this board is stouter than the factory unit, the small clips that run along the front won't be needed. You'll see what I'm talking about when you get your old headliner out.