Roll Control

Hi guys, have the Hurst Roll Control, but the directions got lost! I know this is kind of a straight forward install. I'm going to put it between the Dual Master and the porportioning valve.

My Porportioning valve (like many) is the 5 port. 1-rear outet, 2-front outlets & 2 inlets from the Master.

Question, To connect to the inlet of the Roll control, how do I know which one of the two outlet lines from the master go's to the valve for the front brakes? I might as well get it right the first time!!
Thanks.

Oh yah! why do all or most mopars have the (2) dual master lines looped? were the "standard lines" just too long??