If it is a Jaguar Air Producer (not APU) you will need lots of other bits and pieces like the oil tank, dual pump and Igniter unit and Fuel/Oil block (basically the FCU) as well as some electronic gimmickry (23K?). These were scattered around the airbrake bays of the Jaguar (Oil tank and Fuel/Oil block in the right bay, Air Producer, HEIU and 23K in the left bay) and not physically attached to the spinny windy bit. May have some notes from decades ago will try to look them out if you're interested. Seem to remember it idles at 80+%.
Exriggers link shows all the bits and pieces very well
