A, B, C can all be interchanged. They are just different die revisions.

I have seen IIsI cards that use the A version, and B version, and they will work in an SE/30 with an extender card.

I am going to have to replace the chip because the pins are not only bent, they are creased/crushed so they wont mount back down. Now, I just have to find a card that has the chip. I only have 1 LC card and its not the same chipset at all.