Probably not going to want to reuse those reservoirs.
I would assume (double check) that they use common sized 2.0 or 2.5 springs. Those you would be able to drop onto almost any other shock of the same size (probably not the hardware though, just the springs). There are other things you'll need to keep in mind though if you are swapping shocks like collapsed & extended lengths, mounting widths, etc. For example not all 12" travel 2.0 coilovers are the same, they vary quite a bit manufacture to manufacture.