Fuel pressure gauge

[pistonbully]

Im thinking of putting in a fuel pressure gauge or gauges.
I am wondering if i can monitor the difference between each side of the fuel rail with a gauge on each side.
So is it possible to put 1 in on each side of the fuel rail or am i limited to one fuel pressure gauge monitoring the complete fuel rail?

 

[STROKER]

Hate to burst your bubble, but their is no fuel rail on a 6.0... their not common railLOL