Hi Tom,

Another potential source for 68HC11 OBDII ecm's is here:
https://www.ebay.com/b/Engine-Comput...596/bn_1362181

Daewoo used 1.8L, 2.0L, and 2.2L GM engines and electronics for a number of years. Some Isuzu vehicles also used GM engines and electronics. Here is a related thread with pictures.

http://www.gearhead-efi.com/Fuel-Inj...out-these-ECUs

This video has a bunch of really great shots of a Daewoo circuit board.
https://www.youtube.com/watch?v=Z4fxmOmV464

I have a Daewoo ecm that I'd love to be able to use in an upcoming project. I'd be happy to obtain a used one for testing if you want to work on one.