Concur with the above...I would run it for now and see if the coolant level changes...white smoke is usually boiling the coolant in the chamber so you see steam...
Did the 2 barrel swap myself, if the mixture is set right, no smoke on mine...
Since there is coolant in the intake, it could be coming from an internal manifold crack...though since you never drove it before...and maybe it has been sitting a long time, could be anywhere really...
Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.
Pro-choice, that's a LIE, babies don't choose to die!!