[Alfa76]

I had the same thought about my coil springs, they are original.
My car still has proper ride height and all other suspension wear items were changed.

Since I had already replaced all bushings and shocks a couple years ago, I was thinking about doing what KL Harper said, but with the Alfaholics " fast road kit".
www.alfaholics.com/parts/105-series/steering-and-suspension/alfaholics-has-developed-a-range-of-4-suspension-p/

You would think that after 50 years the original coil springs would have lost some travel flexibility.

 

[Alfa76]

Well, not really. How often do you replace your valve springs? Modern spring steel is designed to retain its elastic properties after a LOT of cycles.

Deep pitting due to corrosion is another story. If your springs are badly rusted, then sure, they may be prone to sagging or breakage.

No rust, no sagging.
I hear what you are saying.
That is a very good analogy.
Thanks Jay.