CCX 33239
I have similiar pedals and purchased them from Finishline. On the left side of this forum.
I used a hardware type spring similiar to Aussie Mike. No doubt Aussie Mike would have made his springs.

..Shelby would never have one a race if Aussie Mike was on his team as they would still be building the Cobra or rebuilding it..
Sorry Mike just had to say that....