I appreciate all of the help on this. Does anyone know if the LMC springs that are linked will fit a 69-72 seat frame? It says 73-87 but it looks like it could work.
I took some springs out of the original seat in my truck, which is not the full foam seat, and bent them so I think they will work. The problem is they are a smaller gauge wire than the broken spring which was already apparently not strong enough since they are so commonly broken. I may have to see if I can figure out a way to use 2 springs as TXCR suggested.
https://www.lmctruck.com/1973-87-che...eat-components