3" inch spring inboard kit
Hard to find used because the A body stuff has a different rear shackle than the B and E stuff. Plenty get burned on that when buying used or recycled supposed to be A body kits. DAMHIK. Be careful.
Even A kits that were bought and not used sell for in the 80-90 range + shipping.
Good luck with the search you might get lucky and find a correct kit for $20. Never know.