To be able to produce you upgrade we need some info from your original ECU

Placement of ECU:

900 94-98

9-3 98-02

9-5 98-10

Part number, Serial Number and VIN code

Part number is located on the label on the ECU

Serial number is below the part number

VIN code is on your cars document and at the wind screen, starts with YS3

On Saab 9000, the label is located "on the top" of the ECU