Change a dually to fleet side ???

[OVERKILL 19]

Rear diff needs to be wider so you can still get 4x8 sheet of plywood between the wheel wells inside box. The inside dual is dished inward so do diff needs to be wider so it does not hit the leafs or box wells. But it's been awhile I could be wrong.
My 08 mega cab


Pretty sure a dually rim ain't gunna fit in here! 13/4 between tire and leaf.

 

[OVERKILL 19]

Just thought of it! The dually cab and chassis diffs are narrower due to not having to worry about box wells.

 

[growly]

stupid question, what all is done to your truck that you don't want to get rid of it? aftermarket goodies that can be swapped over to a new truck? Rear diff is wider on a dually. You'll need a fleet side box and Rear diff and remove the hub extensions from the front,SRW wheels and tires and there ya go!

 

[sledneck_03]

i really think you just take the outside wheels off the back, and take the daully fender flare off.

It will run the dish concave out like the fronts on the back. so you might have to run some front wheels on the back as well as get some fender flares to cover the holes from the dualy fender flare in the box sides.