Before starting this job, I suggest buying a new turbo-to-intake manifold rubber seal, since those are real cheap (I think same PN for 85 CA). I had oil dripping from that junction in one 300D and fixed it (w/ turbo on) by jamming O-ring material into the gap, then self-fusing silicone tape.

Rollguy, I suggest your brother replace that evil "aux water pump" with 5/8" heater hose (I used silicone) since not needed in the lower 48. It can fry your climate push-button and probably cause the whole car to catch fire (suspected in several under-dash fires).