immortal1 (linn)
+1y
Just my .02 - I am currently running a 3 gallon tank on the daughters truck. It has 6" bags up front and 7" bags in the rear (fair amount of volume). The truck is probably 3,000 pounds +/- and if I just want to get to ride height I am fine. Any higher and the pump kicks on.
For your small setup (2,000# car, air shocks and probably 6" bags) a 3 gallon tank might work. But you will need more pressure for the shocks so i would also recommend around 5 gallons of air. Based on size limitations you could also run 2 tanks (2.5 gallons each) but I would connect them together with some air line.
Lot of good ViAir compressor deals out there - most should be fine for your application. Although an engine driven compressor (EDC) would be your best bet