Alright, so I'm new here; I was wondering if I could swap the rear bumper + trunk from an 03 on to a 99?

If I can, can I just take the bumper and the trunk lid off and swap it? or do I need to do something to make it fit? or do I need to take the whole sides too? if that's the case, how would I do that with the rear window there? Note: both cars would be 2 door?

rear bumper bolts right on. trunk is the same. the 03 tail lights bolt right on also. 03-05 trunks have extra holes for the center light. but you can break off the little tabs from the middle of the center piece and bolt it to your current trunk just using the regular 3 tabs per side.

Also, make sure you get the foam bumper support and the brackets that mount the bumper to the quarter panel. They are different than 95-02.