I am trying to visually identify a SBEC vs SBEC2. I was able to find at least one of each type that I could verify. Lots of issues such as no part number on the ECU and none on the chip. I have several that I cannot find in the ECU-LISTING.document or fiche. I have two picture, the first I believe is the a 1990 SBEC, I noticed a thermistor half way up on the right hand side and near the connector a wide ceramic hybrid device. The second I believe to be an SBEC2. There are two vertical resistor arrays on the right side of the board near the top and a thermistor to the right of the 60 way at the top.
https://drive.google.com/open?id=1W5...YFR2_Mqp3jG8Ka
https://drive.google.com/open?id=1Tm...Jevw1vBkstP2if