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Ok did a bunch of searching and couldnt find a solid answer. I am converting my GTR to big single, and want to confirm water lines befor i put the engine back in. The water line on the turbo side that goes into the block, what is it a feed or drain? How about the one that comes off the front water neck and around to the trubos, and then carries around back the engine? Can some one help set me straight on how to plumb this? Thanks