It’s been a few years, but I am on the road for about a month now. The O2 sensor issue is fixed, the downstream of cat O2 sensor was wired to the wideband signal. Had no wideband. I bought the correct sensor and wired it in. Seemingly had a fuel pressure issue as well. The car was built with a carb regulator I found. Changed that out and jacked up pressure. That made all the difference in the world. Added datalink port so we can read on computer and we are down to 3 codes about the evap system I don’t have. Picture was first ride with my son where we drove about 20 miles, never more than about a mile from the house as the crow flies. We blasted up around Saratoga lake the other day with no issues, so confidence is growing.