rear question

[David Flores]

soo....

I'm installing 2 1/2 drop spindles in my truck.

I want to be able to leave the rear at stock height but level level the truck out at times. Which would be about 4 drop in the rear.

I know nothing about air bags. but I'm guessing this would be the best way to go about this.

Any suggestions on how I would set this up and what bags would work for this and what else would I need.

and what else I would have to do to the rear of my truck?