How to test 5.7 hemi?

In the hemi world, dyno's have been run indicating certain carb intakes (XV) give up a lot (30-40 fwhp) down low under ~4000 RPM. That particular intake didn't catch up until maybe 6000. I'm sure there are other options that fare better.

If you want a wild cam (significant overlap), you'll arguably be better off with a Carb.

This also might be that a carb intake for a gen III hemi has not had the sometimes years of development that other engines enjoy