Racor makes the gauges that you need. This model screws into the top of each filter- https://www.defender.com/product3.js...087&id=3939893
They also mak remote mounted gauges and just the gauge itself. Look at the additional items on the lower right side of the page above.
But FWIW I have found these gauges which I have on my boat, to be of limited use. Yes they will give you advance notice of pluggage but engine performance also will.
A filter that is almost plugged will not allow an engine to reach WOT. It will act like it is short on power (well it is) and sometimes sputter. An engine that gets water past the filter will also sputter at high rpms and load. If that happens just change the filter or dump the bowl.
In normal operation with good fuel and no water getting into the tank, filters will last for years on my boat.