the 55-59 task force cabs and beds are the same - the fenders/hood/grill/rad support differ, 55-57 fronts interchange, 58/9 interchange, the later frame is about 2" longer at the front - the fender spare mount was an option all years
there wass a big window cab all years and it could be had as an individual option, the chrome bits are also individual options, but there was a "deluxe cab" option that was a big window, the outside chrome window trim, a better seat, and chrome dash knobs
only desireable if you want the glitz - chrome grilles are waaay spendy to rechrome and some folks don't like the spare mounted there - if you like it go for it!
Bill
also - "delux" w/ no 'e' was a Ford term
