Instalation is easy for the level you are going for, just a single injector into the pipe between the intercooler and the TB will be fine.

I would imagine the L6 has octane wires too, PM fluxcapacitor (simon johnson) on here and ask him to view this thread as he is this forum's expert on the YB management systems, hopefully he can reply and state that my assumption is correct or not.

Here is a picture of my install:


But sadly you really cant see much, the pink and blue bits are the solenoids though, and if you look closely along the pipes from them you can just about make out where the injector is.