Actually, the PICT2RSR one has a few more bytes on the RSR header:

00000130   00 16 38 42  49 4D 00 00  00 00 00 00  00 5B 00 5B  ..8BIM.......[.[
00000140   47 72 89 70  68 81 81 AF  00 01 00 0A

And like I said, the first thing I found in the Poser RSRs was that everything up to and including the first Newline (0x0A), when removed and replaced with any PICT header regardless of the data therein, will allow it to be opened as a PICT (and the height and width information in that header are either ignored or at least superceded by the later data).

I'm the asshole. You wanna be a shit? You gotta go through ME.