So the headers on my yukon are junk. They are Borla, and with the million mile warranty, they COULD be replaced, if they were still made. But Boral said they would reimburse me with whatever header I buy. I have shorty's, but thinking of long tubes since they make a little more torque than the shorty's. But searching around the web brought up some posts where long tubes won't work with SAS brackets. I have an SAS kit from DIY4x. I'm not 100% on going long tubes, since I don't even know if it will make a difference since this has a Whipple on it. Was understanding that with forced induction, kinda doesn't matter. But, asking anyway!!