Confused... are you talking about that bent tube with the screw-in ends that goes from the exhaust to the intake? If you are, it isn't welded in, normally.... I had a hell of a time trying to get one to line back up in a friends CJ, same year as yours.... I tried everything to get both ends to line up and actually thread... lost a good bit of skin, some blood, wow, what a pain.... I did have to use one specialty tool. If you don't have any "crow's foot" wrenches, you will need at least one for this job.... The one on Betsy's was a 1 inch.... What I'm talking about is the tube in the picture that comes out of the bottom of the intake....

Hope this helps.