Mike is the the man. He can get you the parts you need. For a parts list, check the tech articles on this site. Click on "roof rack install" and the first page has a parts list.
You're also going to need the nut plates for the rear ladder section. And the hardware, including four spacers because it's a soft top. I guess you don't really need the spacers, but it's said that it makes getting the top on and off easier. I found some online, but I can't remember where. For the hardware, I got the part list from the tech section and sourced it online as well.