While working on the heep this weekend, I found that the pipe that runs from my exhaust manifold to the intake manifold, just behind the egr valve was now connected. I tried to hook it back up but found that the threads on the intake manifold side were stripped. I was thinking of just tapping new threads but do not know what size it is. Any body have any idea? This is on an 86 CJ, 258, stock intake.