I have a question about an interesting (though almost definately unsound) gambit I encountered in an internet game.  Here is the move order:

1. e4 c5 
2. d4 cxd4
3. c3 dxc3
4. Bc4 cxb2
5. Bxb2

This starts out like a Smith Morra but deviates in the last few moves.  This looks like it is unsound, but I would still like to know if there is any refutation for it.  I know that it's possible for black to transpose into the Alapin at move 3, but I don't want to do it just to avoid this line.  I'm only a 1400-ish player and I have recently started to play the sicilian because it looks like an opening I won't have to discard in the long run.  I usually try to get a najdorf setup if possible.   

I couldn't find very much about this line in databases and Fritz recommends just taking the pawns.  I also saw a Bill Wall game where he used this opening.   

In any case, I would appreciate any input on how to handle this line.