QJ Vacuum Lines...im stuck

[geezer#99]

If it runs good don't be concerned about whether it's hooked up right. Your motor will tell you. My truck likes to run just like yours. Manifold vac to dizzy. Runs like crap otherwise even though it too is supposed to be hooked to ported vacuum.
Most motors ran manifold vac to the dizzy until the emissions frenzy started, then ported vac sources where available on the carb.
Originally your motor was likely set up with a manifold vacuum line to a temperature control switch on your thermostat housing. And then another line to your vac pot. No vacuum when cold but when the switch warmed up it supplied vac to your dizzy.
If it runs good enjoy it. If someone questions your choice of vac source just tell them that's how your motor runs best.