2014 work Truck edition suspension

[Lowchevy14]

I was wondering if the front shock absorber was air what I'm trying to do is drop my truck and needing help cheapest way possible for.the front and back???

 

[zora]

which truck, Colorado, Silverado, etc.
If a Silverado which model, 1500, 2500, 3500?
do you see air lines going to the shocks?