It will work just fine.
The ferrea springs and retainers come with spring seat locators where the supertechs do not.
For the couple extra bucks I'd go ferrea
Frankie Beans runs supertech springs and retainers with ferrea valves with no issues. He had supertech but the valve head fell off the valves.
Next up we will be testing the head with Ferrea valves, supertech springs/retainers and IE cams!
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