Proceed with the following at your own risk!!!!
This will be the first part of this DIY, if its your first time attempting something like this and you want to take your time doing it, I'd say the total time in just removing the trunk lid with or without spoiler would be 30-45 minutes.
To properly do a trunk swap for the sake of one person going wingless and the other going winged, you should also switch out your rear deck panel. This gives the newly wingless a third brake light and it also allows the newly winged to have only one 3rd brake light as opposed to two of them. Now if you were wingless before and had your window tinted, you probably will want to get it done again as now you'll have a clear hole in the tint from where the tinter more than likely tinted around your interior 3rd brake light. Something to consider if you haven't tinted your car yet and want to eventually swap out trunks.
Now for the fun stuff, I borrowed some of these photos from a previous DIY on spoiler installment.
Tools needed for the trunk:
1x small flat-blade screw driver
1x 3/8'" ratchet and 12mm socket
1x 12mm hand wrench (closed end prefered)
1x extra set of hands for removing or holding up lid when it comes time to.
1x set of standard pliers
1.Remove trunk release handle from its dock, slide cable through the handle so that the skinny portion of it is easily pulled from its grip:
2. Take flat-blade screw driver and carefully pry the dock away from the trunk panel:
3. Locate the push/pop caps on the trunk panel (shown in red)
4.Take flat-blade screw driver and pop them out one by one:
5. Put the caps securely in a ziplock bag or somewhere you will not lose them:
6. Your trunk should now look like this:, remove brown plug (from spoiler) and remove the black and white plugs from the lock assembly:
7: Using the pliers, remove clips holding the harness into the trunk and then feed the harness through the OEM holes which also requires you to remove the rubber boot plug thats in the trunk:
8. Take flat-blade screw driver and pry open the retaining clip on the trunk shocks, I chose to do the top ones which will be obvious later on. I also did not switch the trunk shocks as they seemed to not be different. Once the clip is off or moved out of the way, pop the shock mount off and away from the trunk, have a friend hold it in place for you as now there is nothing to hold up the trunk anymore:
9. Take ratchet and 12mm socket and begin to loosen (not remove) the bolts holding the hinges, the ratchet may only reach the forward and middle bolts:
10. Take the 12mm hand wrench and losen the rear most bolt of the trunk hinge (by rear most I mean the ones closest to the tail lamps):
11. At this point you and your buddy can go ahead and remove the bolts from the hinges while holding the trunk up in place.
12. Once the bolts are out, carefully break the seal holding the hinges to the body, a little bit of forcefull prying and swaying of the hinges will do this for you.
13. Now one side at a time, remove the hinge from the body and the inserts holding it in place.
Viola, your trunk is off, install is the opposite of removal!
....more pictures and details to come later, sorry.