Most parts are available, however I am simple person whose technical expertise on cars stretches as far putting oil, water & petrol in it!
Power steering thingy will be available (however I haven't a clue where to find it???) Where do you live?
8v Gear box is good and done approx 120k but again (I know where it is but wouldn't know where to start to take it off!!! - you are more than welcome to come and remove it yourself though?)
J164 you can have the car/shell minus wheels, boot lid, front grill & interior for £350 ONO you will have to collect it and will need a trailer or flat bed truck as the engine is f00ked!