A guy in the MN Z club has one, but I have never seen it run.
They work, but not as well as a turboed FI motor, mainly because the carburator cant automatically control the fuel mixture, or the timing due to ping.
Rumor has it, on a turbo motor a little bit of ping can cause BIG problems REAL fast.
Also, you run into a little bit of the usual problems with a 4bbl on a L6.