No Electronic box in pointless distributor

Pretty sure that's a Lean Burn; I have the slant six version on my Dart because I wanted to use a locked distributor and have EFI control the timing. There are a few possibilities here - any of them will be a can of worms for a street car, but they're going to be completely different worms. Or worse, "worms" with cat eyes and yellow tails.

1. There is some sort of computer controlled advance, hiding somewhere in there, quite likely under the dash. If you're lucky, you may have a vacuum line running through the firewall to find the controller, where it will be used for vacuum advance. You're dealing with something complicated that the owner did not leave any documentation about.

2. This is a full on race engine with locked timing.

3. The previous owner thought it was a full on race engine and should use locked timing but was a little delusional about its capabilities.

4. Whoever put that distributor in there was either really desperate to get back on the road after the correct distributor broke, or stupid enough not to realize the difference between a regular and Lean Burn distributor.