A Spartan 3E 250K has 5508 logic cells. If I understand correctly, this is not enough for a design that needs 90K LUTs, though I'm still learning about all of this.
I'll try to put my serial design online as well. That fits into 3K or 4K I think, although it's obviously much slower (64 cycles per hash). It's a nice toy for people to play with if they have smaller boards.
That would be very much appreciated. Many low-end boards could fit half a dozen of these, and you could pack some into the remaining space on a higher end board to approach 95-100% LUT utilisation.