yes you can bolt a regular bed on a steppie truck the only difference in them is the width of the actual bed bolt holes are the same... and as far as which beds fit i believe it will work with up to an 03.... i believe that 04-11 may work but not sure if the body lines will line up....
all beds 93+ will swap, as long as they are short beds. when swapping from stepside to fleetside, you will need to swap the rear bumper, wiring harness for the tail lights, the fuel filler neck, and the tailgate.