Any 3/4 ton would do fine....not 1/2 ton...
a single rear wheel 1 ton if you can find one in good shape, 4 wheel drive if you wish in either
stay away from 6.0 and 6.4 liter Ford diesels, problematic engines...the Ford 6.7 diesels seem to be holding up...
if you can find a Ford 7.3 liter...