66 K10 leaf springs

[Dismas]

Started my rust repairs on the bed this week, and after I got the fenders off, was poking around looking at stuff underneath.

on my leaf springs, both front and back, the lower leaf ends have worn a smallish notch into the spring above them, looks to me like this will actually stop the springs from being able to slide on each other, and perhaps accounts somewhat for the very stiff ride in my truck.

I looked at LMC, and it is ridiculous expensive to buy new leaf springs.

any used springs from another 66 will probably have similar wear on them.

So, trying to save a scouting trip, will leaf springs from any of the newer model trucks work? Or am I stuck trying to rehab these springs a bit? or buying new ones at some point?