I have been reading a lot about these low ( 2,3,4 ) micron fuel filters with pumps & gauges & all other high tech things. Anyone ever look at the Racor P series filters ? They have built in pumps, heaters, WIF sensors, & you may select GPH & Micron size. They are WAY cheaper than all these big bulky twin filter ones I’m seeing advertised, & they are single canister. So what’s wrong with those ? Been using them for ever on boat diesels, why not trucks ?