on my 500hp w/ gills i have 4 hoses coming of the stock t/stst housing to my gills 2 go down to the bottom rails on the manifolds and the othe 2 go to the back side upper part of the manifolds they are the 2 that come off the brass peice with the spring loaded check balls in it. my crossover only has 2 outlets so how do i plumb this system.

pics

get rid of the check valve and install a 90 or staright fitting,hook the existing hose that goes to the riser and run the water feed hose into the bottom of the manifold like shown in the pic..

http://www.cpperformance.com/detail.aspx?ID=2943

Call Gil and get hoses and hose barbs that takes out the tee on the manifolds. The hoses route the manifold water to the riser.