Aloha,
quick note : KickStart and Workbench are not the same.
Kickstart is the ROM, that means a set of chips which are inside you Amiga.
Workbench is the OS. (Like windows, yuck !)
the hand that shows you 1.2 is the Kickstart version.
Now, you CAN'T have any OS on any Kickstart, they are bond together.
Workbencj 3.1 will work with Kickstart 3.1
Workbench 1.2/1.3 will work on kickstart 1.2/1.3
If you wanna have a modern WB you will need also a new set of ROMS.
The reason for that is Commodore released half of the OS on floppies and half on the ROM.
Many commands are a LOT faster coz they are on a chip. That's why the Amiga was superior to many windows machines today. They had a standard which was home made. Micro$oft could never make it possible due to MANY different motherboards.
Good luck ! :-D
