So now the next step is to sort the hatch latch!
Idea to use a Passat boot latch is out! Passat works on electric not air!

So next I will try sinking the old mechanism into the hatch, a cut and bend and a metal infill to rotate it about 80/90 degrees. And then of course see if I can make new connecting rods. Should be fun!
As a last resort I can cheat and get a solenoid one!