Two different type of WABCO compressors?

Hi everyone,

Here I have few questions About wabco compressors. Recently my C4GP suspension refused to work any longer. So I did research about compressor repair kits. BUT.... looks like all kits I found on the ebay are only for these ones:

but in my picasso is this one:


can I use either one or it has to be like original? I tried to fix it, it was full of water, motor brushes was jammed, desiccant was soaked, so I fixed everything but piston ring is worn beyond repair and it has to be changed, but I cant find them anywhere..


unfortunately it is not like this one
Anyone has successfully repaired one of them compressors?