Front struts and brakes should be a big improvement over the Stanza. I assume from the electrinic ignition that the bluebird is a Ser 2. If so, then the L20 can be used (assuming it's in good condition). These were the pick of the L20's.
Rear axle bits may be usable, although I don't know if there's any benefit on a Stanza.
Steering box? Brake booster? Maybe the alternator and some electrics.
After you've stripped what you want out of hte BB, you can wreck the rest and hopefully make some money back.
Oh, and welcome to another rally nut