A list of Z model specific and non-specific parts would be handy.
A trial version;
Head carriage boards differ per model (8/12 inks = 4/6 heads) and a difference between the Z3100 and Z3200 by the RED ink difference. Not the heads slots, check is electronically on the Red versus Chromium Red head chip.
Formatter harddiscs (at least the content) differ for every model; Plain versus PS, 24" versus 44"?, Z3100 versus Z 3200 (A versus B)
Formatter mainboard that carries the harddisc?
Power unit?
The right side cartridge slots Z3100 versus Z3200 as the Red ink cartridge plastic keys differ. May be solved by cutting them off on the cart. Cartridge chip is most likely read somewhere else.
Service station per 8/12 inks = 4/6 heads.
Belts per printer width.
(More) Universal;
Print Mech board
Spectrometer most likely
12 ink head carriage usable for both Z3100 and Z3200
Lots of the head carriage and media transport mechanism parts if printer width does not play a role.
Comments and additions are welcome.
Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htmMarch 2017 update, 750+ inkjet media white spectral plots