I have a 90 hydrolic head complete A-2 motor I pulled (1.6 non turbo) from a junker a few months back...
That specific pump has that tower, and several ports, one which is on the tower. I assume, THAT pump would work properly if connected to the vac port on the intake of the turbo head..,.
btw, I chickened out.... :oops: and pulled the turbo head, and put the standard solid lifter head back on today.
A new BOSCH pump is due in any day now....