This may be useful to read:
http://jimbutterworth.co.uk/8ecu.htm
I don’t have any experience of the WDS/PDS etc. but I’m sure that Bob (motorcarman) may have a clearer view:
Just get a used part from a salvage vehicle that is the SAME as yours.
The list of PROMS is in the Recall T493/R493 if the procedure was carried out during the campaign you should see the part numbers on the case and PROMS
I’m pretty sure almost all the ECMs are the same, it is just the PROMS that are different for models and years.
Here is a copy of the Recall we did in the late 1990s/2000s
05-1-26am5 1995 MYRecall R493.pdf (256.2 KB)
bob