So I'm trying to find ways to upgrade to Cobra brakes without breaking the bank on a new kit for a grand. I was wondering if anyone's used Rockauto to buy reman loaded calipers? If so, which ones should I pick up? There are options from Motorcraft (rear only), Centric, Raybestos, and Retech. Does any of that matter at all? Not really very knowledgeable about this.