Knuckler

Hey guys just a thought. I want to swap the coils out for leafs in my suburban for towing. Anyone done this, tried this. I tow a 8000# plus trailer. I would like to swap 2500 suspension front and rear. I think the front will swap no problem but the hangers and shackle mounts is where i'm having trouble. Any thoughts? I know the 2500 is an option but not according to my budget. I can get junkyard parts pretty cheap.