Re-READ my post .. what I said was .. that PORT injection got us NOTHING over a dual nozzle when we found the best suited spot for the Dual Nozzle ... All it did was add complexity.
This was tried in Several applications starting back in 1992 .. all the way to 2015
Maybe the optimum mounting for a dual alky setup isn't the out of the box config
Turbo 5.0 , Turbo LS, Turbo 500 cid 2800 hp applications ... what was found is that the placement of the nozzles had the MOST impact . and that porting the meth had no gain.
The intakes on the 5.0 and the 500CID motor are very very similar to the buick plenum design .
Do your own homework and you can draw your own conclusions ... I can't tell you how many cars I've seen switch from a 4 barrel carb to port fuel injection .. guess what .. they gained ZERO for power !