If you are okay with mismatched keycaps, I have a CMstorm set I don't care about, and I'm sure I can find a tenkey set somewhere. I also think I might have a set of (thin) cherry (lasered) PBT (with tenkey) that I don't need that I could let go of for cheap.
The cherry set will fit a modern computer (including capslock and modifiers) but you'll have to mod the spacebar, or get a different spacebar.