The bolts holding the propshafts to the diffs & box, seized on solid!
you can try so thing like this Halfords | Halfords Shock & Unlock Spray 400ml
Upyou need a 9/16 socket on the nut and you can get a 14mm spanner on the bolt head,
If you can get to me I can have a bash, never been beaten by a bolt yet, I had to cut one off my rear prop cause it was spinning inside the handbrake drum