kenworthGoose did this by boxing the inside of frame rail and moving the hangers to opposite side and mounted them same place but inside frame.

then narrowed the 8 1/4 truck axle to tuck 21.50 in the fenders on 12 or 14 inch wide rims. (cant remember off hand now)

IIRc someone else did a dakota the same way, just swap sides with hangers and boxed the frame to mount them on inside.

i plan to weld ladder bars in line under frame rail,add coil overs,pna hard rod, will truck sites on the stock springs with the flip flop it has now.

this will keep my pinion angle and ride hieght where it sits now. handle a little better for street duty with the ladder bars spred a little wider under the truck instead of being narrow inside the frame rails.