[42merc]

Kube quote.

Which means only the '42s you've looked at look like the "pics above".
Here's a photo from a '42 that has won preservation awards.

So you are saying if a '42 Ford or Merc doesn't have the the crossover tube, the plug wire conduits are not "authentic" ?
I suspect those conduits were discontinued about as quick as the Liquidmatic transmission in '42.