OK I think I got turned around under the car.
From Wayne Dempsey's book/website.
Project 16 photo #16
This shows bank 1 (cylinders 1,2,3,) and the cast mark showing "which kind" of tensioner goes in there (purple arrow).
Project 16 photo #23
This shows bank 1 (cylinders 1,2,3), note cast boss for engine serial number The tensioner comes in the bottom adjacent to the chain driving sprocket. The lock on the exhaust cam (5 chain design) needs to be at the far end of the cam opposite the chain driving sprocket, so for this bank it's at the front of the engine behind the (US) passenger seat.
I believe the drawing you posted above in post #21 is from the front of the engine (with serpentine belt pulleys).
Threaded Mode
