If it's like my '57, I think you'll need to change the drums on the front. On the rear axle I think the only difference is dual wheels need longer studs. The axle you have may be ok. Others with more knowledge can correct me.

'64 swb stepside (gone)
'57 1 ton
'53 phone truck
'59 swb
'46 1 1/2 ton
'68 swb gmc