Hey Scott - I have a stock exige S C64 6 speed transmission (non-LSD) ~45k miles for sale. I have it listed here for $800 but am open to reasonable offers! It's the same transmission as the Elise so you'd have no trouble using it for that car.
I have a tranny in Vancouver, BC.
It was bought as a package from a local Exige 240 owner, and he claimed it was his spare tranny.
It can be yours for $150, but you'll need to wait until border reopens to pick it up.