I agree with
Verify TDC timing on the balancer
If you've correctly done the r&r on the timing chain then the bouncing timing must be in that dizzy. Verify gap and dwell.
You'll be into it for far more than it's worth, maybe $10-15k to the bad. All you have to do is decide how much the sentimental aspect is worth to you.
To feed the efi brain juice during both crank and run you need to tie into the blue and brown wires at the ballast, if the colors are the same on formals. The ballast is where power is consolidated for both key positions