Delica Canada | Mitsubishi Van Club

Yeah, well..... As in the title you can see that my sprocket B has sheared off the key on the crankshaft. I've been trying to remove it and replace it, however, I can't seem to get it out and was hoping that maybe someone here has dealt with this problem and has a nice, elegant solution for me. Than...

I'm looking for crankshaft sprocket, the flange between sprocket A and B and the key. Does anybody know where I can find this stuff?