A lot of the intakes on modern efi v8's are tunnel rams, just the ports wrap around the plenum for tighter packaging. The injector placment is always a compromise between emissions, driveability, power and power band. The farther the injector is away from the port, the more time there is for the gas to evaporate and cool the charge, but the you have to pay attention more to runner design and velocity. The closer it is the easier it gets to tune idle, but the the more overlap on the engine then gives the effect of fuel stand off and hiccups like that in parts of the intake, you quickly learn where the port flow stalls.
When I built a ram stack intake for the pport rotary, I built the lower intake section multiple differnet ways, with a power band from 5500 -11,200, the injectors needed to be 16" from the port exit for best power.