Thought I would follow up with this... I installed these brackets with my customer supplied 64" leafs from a newer Silverado along with a deaver minipack. The rear hanger was a shackle flip and 6" shackle in the "long" configuration. We also added my bumpstop mount and swaybar kit.L story short, didn't work. The spring was too flat and didn't bet enough lift and wasn't able to support any weight. Fast forward a bit and we swapped the rear hanger for my tention shackle setup with a 6" shackle moved back 6" from stock. Paired with a custom deaver 64" spring, it now handles much better! With a different shock setup, this kit should very easily net ~16" or so of wheel travel. I'll definitely be buying and recommending these brackets to future customer.