318 with nv 4500 5 speed from a 3/4 ton 99 truck

Absolutely not a good fit for the duster. An old power wagon sure. Not a car.
or... hear me out, run some 3.55's and have a burn out machine on tap with that super deep 1st gear and just start in 2nd the rest of the time! meanwhile, you still get to take advantage of the .73 OD

(i'm just kidding, the ratio split between 2nd and 3rd sucks too)