Given the results of the Aussie 4.0 I-6 Turbo, good power and efficiency
gains can be had by going the simple and much cheaper PFI and turbo set up.
For a truck application you could easily stick a couple of V6 turbos on the 5.0 V8 and get a
wall of low end torque, who cares if the system runs out of puff above 5,000 rpm.
Probably find the supercharger will do much the same thing with far less plumbing...........