I just added another outlet to mine for the mobo chipset block. I would have made the manifold longer but that is about as long as it can be so that I can drill a hole straight down without it turning into a nightmare.
As said before it's only temporary so.... I also haven't noticed any rise in CPU temp comparing the system with manifold now, and before when the input tube was just going straight through the CPU block, Maybe it's something to do with the temp of my coolant, (14°C), but I do think people generally get carried away with oversized pipe union Barbs and enormous flow rates. Flow seems more than adequate using a Ehiem 1250 pump which is pumping about 1.5 meters up.