Happy Holidays!

Is there a difference between a Gen I SBC Woodruff Key and one for a 99-02 Vortec motor?
I'm in the process of installing a x4 reluctor on the crank of a 400 SBC and I can't seem to find any detail on if the stock Gen I Woodruff Key will work with the Vortec x4 Reluctor or if it needs one from the Vortec engine.
I'd like to know before I tear everything apart and have to scramble to find parts after the fact.
Thanks!
Elm