Fixing up old bikes is great fun :-) But getting hold of non-standard parts is a pain. Your LBS will be able to tell you if it's possible or not. It needn't be that expensive, unless you want top-notch parts. Entry-level parts can be quite reasonable.

But still - reckon that fixing it up will be more expensive than buying a new bike of similar quality, and consider it the price of getting a frame you like and a bike with a history.