Firestone Air Bags with Lift?

I welded a custom spacer out of 1 1/4" square tubing for my 3'' OME lift. Works great! I do quite a bit of nasty forestry roads with a good load (1000 lbs in bed) but no wheeling per say. I have about 135K miles on my setup without any problems. I did update to BP-51 shocks in the rear to better control the rebound and changed the bags once in the last 10 years because of the rust. I would of probably gone with the cradles but with the snow and ice here, I'm afraid they'll fill up and reduce travel. Oh, and jumped it a couple inches a few times to test the hardware

 

Thanks for the great pic. Im learning that the mounting point on the frame is not directly above the airbag projection onto the leaf/axle. Which is why “extension” (offset) plates are necessary. My reference to“spacers” was to acknowledge the lift created more space between the top of leaf at axle, and the underside if frame. Seems like a “try and measure” to determine the spacers needed. On a truck to truck basis.