Fiberglass rear leaf spring??

The rear leaf spring on my 72 vette LT1 has flattened out some and I have been advised that in the near future I should replace it. I was told that I should think about a fiberglass one from VanSteel. My vette is VERY nice and original but not NCRS. It would show well in local competition. Other then a better ride will the fiber spring affect the value of this vette in a negative direction?

If you want to keep the stock spring I think I have seen rebuilding services from Mid-America. Maybe even VB&P.

You can call and ask them about it.