When you say "front driveline", I suupose you mean the front axle? If you mean the axle, I'd say replace it with a 1995 dana 30 from a YJ. Why? The 1995 D30 is high-pinion, reverse-cut, and has the larger u-joints than the earlier YJs. Plus, the spring perches should not have to be moved, but I'm not 100% on that part. Maybe someone else can comment on that. If you mean something else, please be more specific. Thanks