Considering that the 06+ headlights are a different size and shape and won't fit into the corresponding space on your car, your first step is to find different headlights, unless you want to change out your entire front end. Personally, I think that's a bad idea.

You can simply look at some of the body panels and accessories (like the headlights) and tell by the shapes they won't interchange.

You have to use your wiring for the tail lights to work the 06/07 has a different setup
I ahve 06/07 on my car and look great

There are some photos of them in my album

Here is some body who did it once an 02 with an 06/07 front.
 

Here is some body who did it once an 02 with an 06/07 front.




https://denver.craigslist.org/cto/d/...355658100.html

Door swap
 

Will the door from an 08 fit on an 01 monte carlo

If you can find an 08 monte door, buy the whole car............ that's a 1 of a kind.

Door swap
 

OK so my bad the Craigslist add said 08 lol but it was 06/07https://cimg0.ibsrv.net/gimg/monteca...1d67958e0b.png

yes all you need is your wiring harness have them on my 01 and my 05 TS

I know the tail lights interchange, I put a set of 06' on my 2004. I like the red lense

majority of the body things can work on our 7th gen monty carlos but the front seats cant. what I mean is the wires for the front seat air bag sensors can not work. the hook up is different than what we have I have been looking into seeing what is needed. the frame work actually does work but not the electrical connectors.