In the US, the cooler on the passenger/right side only there if the car is an automatic. The cooler on the driver/left side is for the AC condenser..
Not sure about other countries, but in the US, only the 89 model had upper seatbelts in the rear.. My 88 only had lapbelts in the back.
And from the pictures here, you wouldn't be able to tell if he had 3-point belts in the back. I could be wrong though.. :D
See this picture below.
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You see where the harness belt is mounted? That's mounted in the same spot that the 89's are.
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88TSI-nicely modded...
01 IS300, GTE swap, 60-1 Garrett, Tein, Volk CE28N etc...