Might be a hair smaller than what you're looking for, but someone is selling a brand new S364 (I've never heard of this size before) for dirt cheap. Figured worth mentioning though.
http://supraforumz.com/mkiv-and-2jz-...rbo/?topicseen
The 63mm is rated around 75lb/min, and the 66mm is rated around 82lb/min. So this would probably be somewhere around 77lb/min, but again never heard of a 64mm comp wheel BW before.
Also here is the 66mm's for cheap in case anyone else is interested. They also offer in house designed billet compressor wheel "upgrades" as well.
http://supraforumz.com/boost-lab/sup...bw-s366-91-ar/