So I made a manometer to sync my carbs but I'm not sure where the vacuum port/lines are I need to hook it up to. On other bikes and I've seen there is a port for this specifically but I don't see any on our carbs. Anyone that knows where to start, I would really appreciate it.

The only place I could imagine to hook into is the small vacuum lines that go right behind each velocity stack on the air box.

 

WHen you remove the lower part of the airbox, there will be 4 small rubber tubes connected to the back side of it. Those are the tubes you need to use. The ones not in use will need to be plugged.