Hi Alex, you can route the vacuum line to the vacuum tee on the drivers side of the intake manifold, that's how I had it installed on my truck. you may need to buy some extra fittings/tee's from an auto parts store to plumb it all in. you should see some other small diameter lines that go to the passenger side for the HVAC controls. you can either tie directly into a spare port right at the manifold, or cut and tee into another similar sized vac line.
Sorry, I don't have any pictures of how I had it installed...