Ok, after years and years of wanting a cossie estate I'm going to build one (unless someone can find one for sale

).
I know it's been done a few times, and I've searched on here using the awesome search feature

but it's not working. So, who can help me?
Basicallly I plan to make a
RWD saph cossie estate, so what do I need apart from the estate and the engine/box from a cossie? I'm presuming most of the wiring is similar, but for now I'd like to focus on the mechanical side of things. I seem to recall "issues" with the rear suspension arms or something along those lines, and would the prop be the same, what about the diff and so on?
As for the front, what about the crossmember/hubs/rack etc, i was planning on leaving all the original estate stuff in there, is that possible? I realise it may be easier to buy two complete cars, but if it is not 100% necessary then there is little point.