Scotty,

I held EGR fender flares on the rear of my 04 dually. They are not very flexible. It appears to me that if they had been more flexible and had 3M tape on the top edge, they would work on the dually. Having said that, and having Xenon Fender Flares on the White Obsession, I think they will work on the dually because they are flexible and have the 3M tape on the top. I ordered a set off EBay for $279. When they get here, I will check them out more closely and let you know if they will work.

I think the key, is to have the top of the flare taped and the bottom or insides screwed. The Xenon are more flexible than the EGR or the Bushwackers. I think they will work.