2005 Roof Rack Help

Hello everyone,
I am wanting to replace my factory roof rack. In the past, I have used a luggage carrier on it and also put kayaks on it and it just doesn't seem that sturdy to me...actually it is pretty flimsy. I'm not finding anything good on the internet really. I looked on my roof a little closer and it almost looks like there are fittings for a bigger and wider roof rack. Has anyone replaced their roof rack and have any suggestions?

 

which rack do you have currently? I've put all kinds of stuff on mine and its never not felt sturdy, @Emelianenkov used to put his RTT on his and had no problems