This just arrived from MTP Racing in Germany (via e-bay) "Alternator stator and regulator, Set Honda CBR 100 0RR, SC57, 2004-2007" I will fit this weekend hopefully - I've attached some pics so you can judge the build quality. Certainly looks OK. Only thing that I was a bit miffed by was the E-bay pic clearly shows a gasket, however there wan't one in the box - have E-mailed MTP but not heard anything back. Will post some more pics of fitting..
Shame about the gasket maybe they will send one on to you. You could use gasket maker, you will need some around the grommet where it passes through the stator cover any way there's a good youtube vid showing process for fitting I've posted here before.