Here are the turbos. The v14's have 4 turbos so I would assume that the 24's would have 5 or 6
Edit:
Similar turbo: http://library.abb.com/global/scot/scot208.nsf/veritydisplay/dce75eac1aa8f20cc1256fce00565df3/$File/2058_TPL91B.pdf
Notice the feature: Low Nosie, that thing probably sounds like a jet!