Air bag suspension parts sourcing and plubming

[RKO]

On my daily driver I have air bags on both front and rear I have both rear bags plumbed together and both front bags plumbed togetpher I have two air pressure regulator one for the rear and one for the front along with two gauges one for front and one for rear
Real simple set up and I can adjust the height by changing air pressure.
I don't see a need for separate controls for each bag
I haul with It and never had a problem with being level