It is my understanding that the truck 5.7 intake is essentially the same as the car 6.4 minus the inlet location. The intake was developed for the 5.7 trucks and then had the inlet modified for the 6.4 cars. The 6.4 car intake has the worst distribution of all gen3 hemi intakes.

I would love to see someone test the truck 6.4 intake as that one has the most drastically different runners and plenum (larger).

Best is a relative term, there is no one intake that is best for all gen3 applications.