The Item Script to disguise a Player into a different Job would be like this :
ITEMID,Swordsman_Armor,Swordsman Armor,5,10,,,,1,,4,0xFFFFFFFF,31,2,16,,0,1,,{},{ changebase 1; },{ changebase Class; }
The changebase means,that the Suit changes the Character's Sprite into the Sprite of Job ID 1,which is Swordsman,so if you want other Jobs than swordsman you have to change the "1" into another Job ID like 7 or something else.
But this problem was cleared already in other topics,so try to use the search function next time please.