Help. Corvette 78' fiberglass rear spring. or Steel?

[vulgarzito]

firstly sorry about my bad English.
Well my corvette has fiberglass rear spring and is not working. I don't how to say (vencido) a guy told me that i can make the conversion to Steel Blade Spring. My Questions is ?It is going to work in my model or this affect in something...rear-front shocks, stability. Help me please.

 

[QuestionX]

Corvette 1968-82 Rear Spring - Steel - F41/Gymkhana - 292# - 7 Leaf - 2.25
$161.99 ...

Only slightly heavier..no problems.

https://usmracer.3dcartstores.com/Corvette-1968-82-Rear-Spring--Steel--F41Gymkhana--292--7-Leaf--225_p_1491.html