Thanks for the replies - I did manage to find one in Ontario, Canada.
I must have damaged it on install because I drove 50 km's today and used 1/2 quart of gear oil. Is there a trick to installing these without buggering the seal? Gear oil appears to be coming out of the bottom lt230 mounting bolt.
It was a struggle to get the splines lined up, but in the end I thought the seal slid on the shaft smoothly. My wife is going to kill me :-)