not to talk smack, but those things are really pieces of crap, it looks like a child or possibly a monkey welded those things together... also all the components on them are crap, too. although they are cheap, it would be a far better investment to buy a quality rear wheel (dura ace, phil, campy hub) and good solid crankset and work from there... find a lightweight road frame with horizontal dropouts and then youve got yourself a quality conversion way better than the alpha

...also this is just my opinion, so make up your mind for yourself