IBM Series/1

I'll keep this public for a bit, see if any other Series/1 owners appear. I read through (alright, alright, skimmed) the three docs on BitSavers and believe my machine is a Model D revision, based on the card locations (Although I didn't see any reason behind -why- the card positions changed). This leads me to believe the unit has 64Kb of memory as well, which is nice. The cardcage is quite full (Only two empty slots), so I'm well stacked of I/O cards. I have the full rack, with a single 8" drive, and all the appropriate blanking panels. At one point the machine had a large hard disk - but this was taken apart by, presumably, the same Hell Spawn that took the power supply. When the manual said '300W' I had hopes I might be able to jerry-rig something... but upon looking at the four microribbons going into the back of the power supply casing, with what looks like 20 lines per ribbon... somehow I don't think I'll be able to deduce this without some much better hardware manuals (or, preferably, the real blasted PSU). Given there must have been many of these units made (if they were used in Chevy manufacturing plants and the like), one would hope someone on the ccmp list has some OS media. Anyone? JP