HELP! donor parts......

[layotn20]

just been to a massive scrapyard 500,000 sq foot of parts on the shelf. my kit car takes a mk2 escort rack,

1)but they only had a fiesta mk2 (xr2) would this fit?
2) they had a 2.8 is it? xr4i. front hub lh but not a rh, but they did have a pair of p100 hubs, can u use those or what others hubs can be used?
3)what rear hubs parts do i need for my uprights (discs)
4)they had a xr4i diff labelled with lsd. push in shafts (what ratio would that be)

cheers any help would be great as i want to try and get back there 2day so i can carry on building