In 96 or 97 the following changed:

- fuel injection system, including OBD II
- one coil per cylinder instead of one distributor per bank
- revised wiring harness insulation to prevent degradation

There might be other changes.

The transmission went from 4-speed with 2nd gear start (722.4) to 5-speed (722.6).

Sixto
95 S420
87 300SDL