Although it is hit or miss, Torklift tie downs do post on Craigslist somewhat regularly so I would look there and on eBay for something used. At times complete sets can be found at bargain prices.
Steve and Andra
2012 F350 6.2 gasser SRW LB
Fab Fours front and rear in case we run into a rhino
2019 Northstar Laredo SC