This shackle flip kit will net your 67-72 Chevy Pickup or Blazer 5-6” of lift depending on shackle selection. They are designed to work with Chevy 56” springs. Once you remove the rivets from the stock shackle hanger the shackle flip bracket can be bolted in place. While the bracket can be bolted in place we also suggest a couple stitch welds on each side to extra strength. 
Kit includes all grade 8 7/16s hardware along with 3/8s shackles and polyurethane bushings. 
**1 week lead time if not in stock**