Thanks to all of you for your advice. After further consideration, I'm going to just rebuild what I've got. I found some OEM parts on Ebay-UK that are relatively cheap, although the shipping will be a killer. Even so, I know it will work. One issue that keeps creeping into the back of my mind is brake bias -- although the
www.realoem.com website shows the same master cylinder for both disc & drum brake systems, I imagine there must be an inline anti-drain/restrictor valve to account for the rear drums on my car. If I convert to discs and it screws up the bias, I might end up with a car that is rear-brake happy -- and that won't result in a happy me (or the drivers around me!).
Geoff