You know the deal. As cool as those modern 'clones' are, still not the real thing. They won't sound the same, no matter what Merren/Marstran/Metro trans are used.
You just have to be patient; one will pop up eventually for a decent price. Just last week, an original 69 metalface SL, laydown PT, all original solder joints for 4500. On Reverb. Gonzo within half a day.
Stalk those sites. You'll find one.