Guys, I can painfully say from personal first hand experience, none of the aftermarket front diff covers will work with the DT track bar unless you have 4 1/2" of front end lift or more, as Blair pointed out.
I *think* the OEM track bar should work just fine with 2" of front end lift or more.
Scott, Mr. Sutton has the DT bar, 4 1/2" Skyjacker system and the MagView front pumpkin cover.
I think Phil "rubberneck" responded to a similar thread several months back and said he got a DT track bar to work with a 2 1/2" lift kit and one of the aftermarket front diff covers..... darned if I can imagine how though... ...
Tom