Brand New, Never Installed. Includes all original hardware and instructions. Hellwig Part Number 7437 - the application guide says 1/2-3/4 ton 73-83 C/K-10/20. It's the right width for a 73-87 frame. The U-bolts fit over my 14BFF axle tubes. My guess is it would fit a Blazer/Burb if you drilled the frame in the correct spot, but I don't know this for sure. $100 plus the ride from 93555.