I did not do the direction y i added a fourth port to the manifold seperately for the ibs plus a seperate switch.
couple people like lsvboombox has used this with success.

i had the rear rule pumps mounted upside down in therear of the engine comparment as clos to the drain point as possible. too bad all my ballst gi to gii pics are all gone when the server was re-indexed a while back... dang it.