The NG in the 3-4 Normal is lined up directly over the center. Also when you add in the fact that the 3-4 has 5 men on the Defensive Front you can obtain many 1 on 1 opportunities for your lineman. What that means is that if your NG is a force he will consistently best the center making it a long day for any running game inside the tackles seeing as the NG can play tackle to tackle from his center alignment.
You can have him rush straight down or slant him to the strong side of the offensive formation it doesn’t really matter. Just know that this player will raise hell if used correctly. Ravens and Steelers are notable teams that have defensive lineman who are more than capable to play the NG spot