I can feel an exhaust leak at the flange between exhaust manifold and the cat. I have a 4 cylinder 98 wrangler. In doing my research with the factory service manual I have determined that my exhaust system does not have a seal at this flange like the 6 cylinders do. I haven't opened it up yet to check but I am running off of that assumption. What should I do to repair the leak? Is there an aftermarket seal for the 4 cylinders? Or do I just replace the bolts? Is there a torque value for this? Any help would be greatly appreciated. Thanks!