I had read several post a couple of months ago that the Maxima brackets (44155-04S10) were impossible to get. So on a whim I ordered a second set of the brackets from nissanautoparts.com on Dec 13, 2000 and just received them. I don't know what this means except that perhaps there are still a few out there.
Mike (aka. scca), if you still need a set of the brackets to use as a template let me know and I can ship them out on loan to you.
I am pretty sure these are the correct brackets since they match the set I had ordered previously and installed on my '72 240Z. I installed the '83 280ZX rear calipers on these brackets.
Ruben