MoonSong
Rules-lawyering drama queen but not a munchkin
Sure you could replace the monsters with entirely different stats.
But if you're curious on how things would work with the stats written, the words on the paper in front of you...
...then I assume EN World is the place to go! Am I right?
Ok, now I get what you are trying to do. I don't quite see the point though, If running a playtest era adventure I would use finished stats, more so if I can avoid confusing mechanics. I understand the idea, but I don't see how an answer is useful, I mean this is kinda self-inflicted.