Thanks for all the responses ......thats the info I was lookin for .

 

I have an 03 rclb with a 3/4 drop. I cut the bump stops down as much as I could and the axle rests on the stops when I load 1000 lbs or more . I thought about the air bags but it's only a few times a month that I have that much weight so I think I'm going to do the c notches. I have factory helper springs but the main leaf is barely touching it when the axle hits the stops.