[justcuz]

Is there any advantage to converting to a 3 wire O2 sensor instead of the single wire in this application?
I suspect your not running a catalytic converter, so it seems the engine would benefit from the heated O2 sensor to get it into closed loop quicker.
I would love to see more detailed pictures of the EFI swap.
Do you run single or dual exhausts. I only saw one tailpipe on the left side in the photos.
Wish I could say I was making progress on my junk but I just spent 3 months in Michigan settling my folks estate and still working on escrow and unclaimed funds in 2 states.
Do your family a favor and have your financial house in order, this has been a ton of work. Thankfully I am retired!