[Yt-dev] findinits replacement

Hi all, Has anybody written a replacement for findinits? If you remember, this was a utility that took two outputs along with a region specification. The particles inside that region in the later output were located in the earlier simulation, and the minimum bounding box that they occupied was output on the command prompt. This was usually used for zoom simulations. If nobody has, I'll take a shot at it. Thanks! -Matt