wedge shaft flex

  can someone tell me what the vokey wedge shaft flex is equal to?   My clubs are 1* flat with the S300 Dynamic Gold shaft, kinda wondering if that means my wedges should be the same if the "wedge" flex is equal to it

The Vokey wedge flex is a DYG S200

If i wanted to put a KBS Tour X-stiff shaft soft-stepped 1X in a wedge, what shaft/length would that be?  I am thinking an 8-iron shaft, but am not 100% sure and some places sell by length of shaft not a shaft #.

Thanks