For cheap 5160 try looking in the phonebook under springs. Find a place that specializes in making replacement springs for cars and trucks. Then ask them *very* politely if they`d order some unhardened stock from their supplier. I had good luck with this method and now buy new stock in any width and length I want for $1.25/lb. The only prob is they don`t have it in very thin pieces,still it beats the heck out of cutting spring packs apart,annealing it,and flattening it before you can work it. Also used springs tend to have rust pits in them in less than ideal climates,that was my biggest reason for buying new stuff. Hope this helps. Marcus