You have the big NPT port on the intake & I would assume a smaller ported nipple on the carb. either would be the same as far as vac # so use the carb one or source one of those OE (christmas tree) 3/8 NPT fittings with one or more small barbed nipples & run a small black rubber hose from it out to your destination.

live every 24 hour block of time like it's your last day on earth