PDP-11/45-55 CPU fan assemblies

Hi, all: I recently bought a PDP-11/45 [well, a /55, to be technical; the /45, /50 and /55 are completely identical except for i) the memory options installed at purchase, and ii) the printing on the front console :-], but alas, when I looked closely, it is missing both upper and lower CPU fan assemblies. (No doubt, removed to allow cannabilization of the fans, to keep another machine running.) (For those who aren't familiar, these are long brackets to which a number of the usual square fans are bolted; one is placed above, and one below, the cards in the main pull-out rack of the CPU. The one on top is hinged along the long edge, so it can be rolled back out out of the way, for running cables to boards.) So, does anyone i) have a spare set they don't want (I know, I know, I know, p < .00001, but maybe a miracle will happen); ii) have a set they can lend me so that I can get the sheet-metal part copied (I might get a spare or two made at the same time, depending on price, so we have some on hand); iii) failing all of the above, be willing to take lots of pictures, and some measurements, of a set, to aid in making reproductions. Thanks (hopefully :-)! Noel