Just an FYI if you don't want to keep it original. Upon advice from George @ RDS I retrofitted Discovery calipers with just the addition of a metal brake line. You may also have to change out your rotor, but I'm not so sure on that. A lot cheaper and a lot less hassle finding replacements.
"Every normal man must be tempted, at times, to spit on his hands, hoist the
black flag and start slitting throats." - H. L. Mencken