I have a leaking tranny line that is one of two that goes from the rad on the drivers side to the tranny. One goes from the rad to the tranny and the other goes across the tranny and up to the heat exchanger and returns to the drivers side of the tranny. Because they so badly corroded and I can't tell which one is leaking even after degreasing them, I've decided to replace all three. Has anyone done this before, and if so any tricks, hints would be great.

Thanks