The first pics have three 2" inch barbs and two 2.5" barbs, this was for the standard
Vortex and
AT units and some Steam Action units.
The new
AT's come with twin 2.5" from the get go, but they do have a third 2" "spare" port avail. that is capped, So Michael Schoeny opened his up to 2.5" and requested an ALL 2.5" Super Vanifold to optimize his setup.
I will say when you hook up three 2.5" hoses to two 2.5" hoses, all powered by a single 5.5" hose it's down right impressive.