Well India Four Two for some years I have been looking for a few years for a Micro PDP11/23 in a BA23 case (the same case as the MicroVAX/VAXStation II) and have come to the conclusion I might have to build the 11/23 by buying components separately and building it myself (or should I say mainly slotting in cards to the bus), as I wanted to run RSX-11m and RSTS/E natively, not sure if they take a QBUS SCSI Card (themselves a small fortune now).
Other than that I may eventually break down and buy a used MicroVAX 3100/95 - as the highest end small system though they aren't cheap (a few thousand dollars) but are occasionally available still.
Around 1995 I did buy a 1GB used Drive (one of those double height huge beasties, think it was manufactured around 1992, had a "Novell Netware compatible" sticker on it for some reason) and when the heads moved you could hear the drive "thump", and the casing of the PC rattled