I got the Roof Racks from G-Style, they look just like the factory roof racks, and their about half the price, here's a link on ebay for those:
http://cgi.ebay.com/ebaymotors/NEW-S...spagenameZWDVW
For my snowboard racks, I went with the Big Powderhound from Yakima, I went with these over the factory ones because their universal, I've used them on my truck and a friends Tahoe. Search around, i got these for about 100 with shipping. Here's a link:
http://www.yakima.com/Product.aspx?id=184
Help this helps, good luck