1974 mark 2 parts are tricky to find. plus the front suspension parts are serious issue if any new gen engine is swapped. It is good you dropped the idea.
you can get top notch nose cut & halfcuts at landi kotal for E100 / E101 Corollas' .
almost every thing in terms of mechanical & engine overhaul parts are available brand new.
Chaman / Quetta you can take bare bone drive able car and bring back a transformed vehicle in very reasonable price.
Good luck, we all are here to guide you at every step.
However you need to be part of restoration not just a wallet holder.