I got the roof rack information straighted out. For a few extra cents, the full crossmember setup was worth it. I haven't mounted them, but figured I'd put the pictures up so you could see the difference.

When you order just the crossbars from the parts catalog, you get this. Notice the lack of mounting parts.




When you order the crossmembers throught the seperate accessory catalog for 27 cents more, this is what you get (Model # 2-90005-100-0)




You also get a full set of instructions (you have to lift the current roof rack off to get these crossmembers to slide in); you also get some replacement foam washers and a sticker listing the weight limits.

Hopefully this helps someone else who decides to order this.