Wow
I haven't seen one of those before...
However.... The first thing that hits me....

Is.... As its a Holley/Weber copy, the carb footprints should be the same, to avoid lots
of faffing with strange linkage mechanisms, have you thought about just getting hold
of a standard Weber 32/36 VW manifold ?
The orientation is perfect and the linkage is easy to set up....
Peter