One line, split, into both pumps, join again, up to your fuel bowl/filter/etc whatever your setup is.
I was able to install mine just behind the stocker and only had to drill one hole and it mounted almost flush, but is held in with the 2 other lines so it's not going anywhere.
If someone needs it, I could measure all of the hoses, and put a kit together for the price of parts only so all you have to do is buy another pump....
I seriously went to the hardware store, bought 2 sets of each...
3/8ths Tee fitting w/ 5/16ths holes.
two 5/16 by 1/8" street elbow
three 5/16's by 1/8" barbed fittings
Put them all together with thread tape and used 5/16'ths reinforced rubber hose rated for 60 psi
with hose clamps.
I'll draw up a diagram.