Yes! Contact the "Electro Mavin" in Athens, TN. He purchased all of Ken Kreisel's last iteration of sub drivers, the "Superfast Deep Bass." They are a direct replacement driver and work well in the V-2b. Check e-bay or do a search.
Now, these are single coil drivers, but perform very well. I use a Y-adapter, and think the two sides of the plate amp might be summed. Anyway, the sound is vastly improved. My mains are Zu Druid speakers, 101 db @ 1W and are very fast, quite sensitive. Frankly, the old M&K drivers sounded like mud when paired with the Druid mains. But now, lower octaves slide seamlessly under the the midbass and create no "hump." I was so pleased that I bought another old M&K V-2b and replaced that driver. I like the forward firing of these most attractive twins for detail and impact (my music interests are quite broad). Quite a bargain.
I am experimenting now by de-coupling them from the floor by raising them on Lovan racks. It is apparent that assymetrical placement loads the room better. Good Luck and let me know how you make out.