I agree with Kevin...replace the line. Make sure the brass fittings are sealed tight when you install them in the block, if they leak you'll have water in you oil...
You should be able to get everything you need at your local hardware store.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD