I've had saved searches on eBay for "PowerBook 1400 CD-ROM" along with all of the relevant Apple part numbers for a few months and it finally paid off. I managed to score a brand new in box 8x unit and it works great. When I opened the box, it clearly was brand new. The drive was still sealed in its plastic sleeve and there wasn't even a speck of dust on it. I'm almost finished my 1400c/166 hardware. I have to finish assembling my replacement NiMH cells into the battery pack and then I'm all done!