Don't confuse a "930" designation on a Porsche part as being designed for a 930 turbo
 

Going thru some old parts left over from my 3.0L engine(before I bought a stock 86' 930 motor). I was speaking with a local Porsche mechanic...he enlightened me, that just because the factory made a part number starting with "930...", it doesn't make it a 930 part for a turbo. It's just a numbering system used by Porsche. FYI