Well i know i dont have no 4.11, and my bets on a 3.73, but the lowest rear end for my truck was only 3.03 or something like that. I have my tailpipe cut off right under my cab, but unless i goose it completely, it doesnt scream over 70. But I know you guys know better than I do, so I'll try to be good to my Orange Outlaw.
