Had my 1.8 914 heads rebuilt and the spring kit the rebuilder used was Scat part no. 20138. Do you think they will be fine for a stock engine used for the street only? I noticed the Scat spring wire diameter is .030 smaller than the stock Porsche springs.

Scat Single Springs w/Chromoly Retainers.
Hi Rev Silicone Steel Valve Springs, Retainers and Keepers.
Springs will not fatigue and will not allow valve float at high RPM.
For use with VW Type 1-4 Cylinder Heads.
Complete pack includes Chrome Silicon Valve Springs, Performance Valve Spring Retainers & Valve Keepers.

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