I think this is the part in his message that explains the point how he will get 17" Watanabe R-Types, If it is possible to custom order. Personally I would save myself the hassle and just buy the Rota RB or RB-R's from the group buy because the come in the correct offset, are 17", and Look similar to the R-Type but more of a flat lip.
http://www.forumshawaii.net/vbb/showthread.php?p=6438082
Found this also they aren't R-Type but they are 8 Spoke.