roof rack rails

Hello There to whomever reads this, I recently just purchased a 2008 Pontiac Torrent, and was excited to see it came with side rails. Only noticing later that the space the side rails gives you isn't much for a universal cross bar set up.....16 inches is just not enough for a kayak. Has...

My SV6 has the roof rails that run from front to back, and are 1 1/2" diameter round. I have been able to find 2006 models, which are stated as triangular, but not supposed to fit my 2005. Is there a difference between the 2005 and 2006 roof racks? The photo for the 2006 looks like mine, but I...