Brake servo vacuum???

I'm near completion of my first ever transplant. ABF into a Mk1 cabriolet. On the brake servo there is a pipe that comes out from it that used to join onto the inlet pipework of my old 1.8 8v. Where do i connect this to on my ABF block that's now running carbs? Also next to the oil cooler and water pump there is a pipe that comes out that used to join to a black square box on the inlet on the ABF. Do I blank that of or where does it join to? Any help would be massive. Thanks

( everyone's got to start somewhere )

you need to get a carby inlet that has a vacuum take off nipple, then plumb the servo to that. the pipe on the front of the block is a breather, so you can just run this to a catch tank