The Centris 610 is a nice machine - not too big, but with decent accessibility and space for accessories inside. Some even have ethernet on the motherboard. Does yours?
I recapped my Quadra 610 which is running at 25 MHz, added a QuadDoubler (nice to have room for it inside), added a 160 gig IDE drive with a SCSI-IDE adapter, added two 128 meg SIMMs (using bbraun's memory controller hack in NetBSD), and added a NuBus adapter with a NuBus ethernet card. It has had uptimes of more than half a year with zero hardware problems.
While I don't have a list of the capacitors, I do remember there weren't many and that it was pretty straightforward. Good luck! It's a very nice machine.
I recapped my Quadra 610 which is running at 25 MHz, added a QuadDoubler (nice to have room for it inside), added a 160 gig IDE drive with a SCSI-IDE adapter, added two 128 meg SIMMs (using bbraun's memory controller hack in NetBSD), and added a NuBus adapter with a NuBus ethernet card. It has had uptimes of more than half a year with zero hardware problems.
While I don't have a list of the capacitors, I do remember there weren't many and that it was pretty straightforward. Good luck! It's a very nice machine.