While I admire your tremendous efforts rebuilding the car, might I suggest that photos of it completed with number plates and a tax disc might help you sell it better wherever you advertise it.
Also perhaps a receipt for suspension geometry check or an engineers report of some sort to put any prospective buyer at ease given the extent of the damage.
Please take this as hopefully helpful criticism/suggestion.
Oh and all the best with the sale.
Don't know if it's any help Marzman but A1 Japspares in manchester had several 350s in their yard when I went looking for a replacement "w" brace last week.
For a look at or parts/loom????
Just a note on 1.0l corsas. they are a three cylinder and prone to head gasket problems and timing chain wear. Looked at loads of them for my lad and ended up buying a 1.25 fiesta 2003. Belting little car.