About duals. If…you are going on any two track at all, the track of your rear axle will be too wide. When I was using 16 inch wide tires on 12 inch wide rims; aka: super singles on the rear axle, which are about 4 inches narrower than a set of duals, it was too wide.
2020 Ford F-350 XLT FX4 4WD SRW SB SC 7.3L Godzilla Gas TorqShift 10R140 397 amps dual Alt dual batts Frnt Dana 60; Rr Dana M275 E-locker 4.30's 4580/4320/4066# payload 7243# curb wt. 11,300# GVWR 5-er prepped. 2020 Northstar Laredo SC, 12v compressor fridge, cassette, 320w Solar sub zero insulation.