Think Dwight Freeney 6-1 , 268. He did okay.
Freeney is a DE...and even then, Freeney is the exception, not the rule.
DEs and DTs are freaks these days. People can point to Aaron Donald, but how many Aaron Donalds are there? The last 6'1 NT I can remember making a big impact in the NFL is Warren Sapp. If Shawn Green were like Aaron Donald, then we really wouldn't be having this conversation, would we?