If I'm seeing everything in the photo correctly, this really wouldn't work at all in reality. Turbo/carb setups can be either suck-through or blow-through. Suck-through would have the carbs upstream of the turbines like this (sorta), but the output of the compressor side of the turbos (which would include fuel that was introduced by the carb(s) would have to be ducted back into the intake manifold, which would also have to be sealed from the carb. A carb bolted to an airbox, floating in space over what looks like an ordinary 4bbl manifold makes no sense whatsoever. A blow-through installation normally has the carb(s) in a sealed box downstream of the turbos, but upstream of the manifold, and the turbo-compressor outputs blow nothing but air into the box, through the carb(s) (where fuel is introduced) and into the manifold.