It’s in the ignition section. It’s called the black box and it’s a programmable vacuum advance.
https://www.cbperformance.com/CB-s-Black-Box-Programmable-Timing-Control-Module-p/2013.htm

That is certainly an interesting timing box. First time I have seen it and the only videos I can find has it on 4 banger air cooled VWs. Their website says it is V8 compatible, but it would be nice to actually see it on them. $200 seems a bit steep just to control timing. And the initial set-up is more than a little convoluted: www.youtube.com/watch?v=E9dWYOe8Utg

That may be a good alternative for someone a bit more computer literate than myself and who cannot re-curve the distributor and tune the vacuum advance.