You juts need to order the King Tour pack with no hardware. You will be able to us ethe hardware that came with your chopped tour pack and just remount the King Tour pac to the chopped pacs hardware.
That's true so far as it goes Cat. The King pak comes as a complete assembly that includes the hinge and latching hardware. It does not include the cylinder lock and it's associated hardware nor any of the detachable rack hardware. So if you're wanting to lose the chopped pak in favor of the King pak you can just order the King pak and transfer everything else.
If, however, you want to keep both as an option you'll need to order the following:
King Tour Pak assembly
keyed to match cylinder assembly (a part number I can't find handy right now, but it's cheap and you get a spare pair of keys to match your bike)
King Tour Pak Molded Liner if you want it 53278-97
King Tour Pak Side Light Kit if you want it (the little cheap chrome plastic covers that come with the King pak are kind of cheesy) 53457-79C
King Tour Pak Side Light Chrome Accent Covers 59349-97 (to even further dress up the lights)
Tour Pak and Saddlebags Interior Light kit 54331-04 (this is the new kit that works so much better than what we all started with, you don't have to have it of course, but the new pak won't come with a light, so just in case you want one this is it)
Detachable Tour Pak Rack Ass’y 53276-04
Unless I've forgotten something that will get you home. Good luck.