Yeah, combination of both I suppose, I don't know much about it, but I think it's the VKA unit which goes on the AL-31F... is that the gas-turbine starter in the middle (GTDE-117)? The other two are drive shafts/rotational gears? At the back there should be two aggregates or pumps... as in this picture the attached picture?
Not 100% sure though... help me F-111C/C, what's what?