You could try the British Aerospace Systems factory at Brough near Hull eastYorks,as amatter of intrest the last Harrier i saw was a burning one that had crashed into a corn field setting it on fire with both the pilot and the female student then parachuting into the fire after ejection ,think the pilot pulled the girl to safety with bad burns,that was sometime in the 1990s when i was driving past one monday lunchtime .Time before that was a Lightning that crashed straight into the sea about 500 yards from me in the North bay at Scarborough .
is this link any help its how to remove the engine in 8 hours in the field , first stage involves removing he wings that are held on with 4 bolts and it says you need a crane and tressles, diagrams a bit brief .,,mart
http://www.harrier.org.uk/history/engine_change.htm