I'm also a bit ignorant to this, I'll say that up front.
I believe Okoye would be what you would label as a classic off-tackle in the 4-3, the 1-gap guy I guess you could say.
DeMarcus Tyler or Marcus Thomas would be the more classic NT, who certainly can and do play in 4-3 schemes, but whom are absolutely essential in a 3-4.
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