Ultimate swap confirmation

Hi all
As you already know, the gearbox swap is scheduled on tuesday, Sept.17th at a professional mechanic shop.

Yesterday, I found this affirmation from a guy on another Mopar forum :
"If your using a clutch linkage set up, make sure to get a Z bar from a V8 car. The slant sixes have a different lenght on the arm on the clutch fork side and will over extend the fork and ruin the pressure plate."

But, on the other hand, on another forum, I found this :
"As far as clutch linkage is concerned, stock slant six clutch linkage for three speed cars can be used [with 4 speed gearboxes]. "

My 1966 A-833 bellhousing has a fork of the short type (like the /6 trans) but I’m not sure of anything anymore
20240227_112204.jpg
So, it's an emergency.
Is the slant 6 Z-bar different from the one coming from a V8?
If yes, I'll have to cancel the swap and find out a V8 Z-bar or complete clutch linkage. By now, I only have my original /6 A-230 clutch linkage. I was thinking using it with the A-833.

Please, I rely on you to get some help before monday.
:thankyou:
François