Do you remember what bumper that is on your 04?Coming from a guy with 04 headlights, an 06+ grille, I don't think that bumper would fit EITHER trucks well at all. The spacing is too wide for a standard 03-05 front end. That gap under the headlights will still exist for both the 03 + headlights and the 06+ headlights.
That bumper to me looks like it wasn't even meant for the ram. Modified the mounts to make it work most likely.
My best internet guess.
Here's a link to my documentation of all this (my bumper build is linked n the thread as well)
Alright well I documented my bumper build here: https://www.cumminsforum.com/threads/coastal-offroad-bumper-build-3rd-gen.2546386/#post-29470801 After I finished I noticed one of the edges of the grille only had about a finger's worth of clearance to the bumper (it shifted a bit during the...www.cumminsforum.com