I have a 1997 XJ that's getting a 1987 XJ D44. The brake line and breather setup is different. The 1987 XJ D44 has a separate breather that appears to threaded or pressed into the axle. The brake line is held down with a small 1/4-20 or metric similar bolt. Since I have no desire to change or repurchase brake lines, I am tempted to drill and tap the axle to accept the newer style brake line/breather assembly. Then I can cap off, or remove the old breather and fill the hole with weld. I am wondering what others have done and what extended brake line parts are available for this style (part numbers). The D44 is out of the vehicle and on jack stands completely empty, getting cleaned up, painted, gears, and locker. So I'm not terribly concerned about drilling and welding.