Stock height suspension question.

I have been trying to follow some of the threads about suspension, but most people are looking for lift for offroad apps or to make the truck take a bigger wheel/tire. I do not want any of that.

I just want it to haul more weight when I need it to, without the rear bumper dragging the ground. Was wondering about whether something like this is what I need:
http://www.suspensionconnection.com/cgi-bin/suscon/1250t2.html

Anyone have any experience with these? And can you explain how they work? Afraid I do not understand this very well.

 

X2 on the air bags. Although Virginia, where can you get them for $80? I have only seen them for around $200 or so.

 

The same site where I was looking at helper springs wanted like $289 for the firestone air bags.

 

LOL, I was like where can I get this deal? Ya I can see if it was bags only.

 

following .... like to see what options are out there for this and pros and cons for them


ps. might get more views if headline was more descriptive towards hauling/towing, not sure if you can change or add tho