Part number

Hi, please can you help me?

I want module or upgrade version this shoping.
Can you insert cell part number in product and in option?
For example:
Product name T-Shirt
Option :
Size XXL - part number 123XXX225
Size M - part number 123XXX222

Now is only Model in product and this is for all options.

Thanks for help and/or new module. Sorry for my english, if you can´t hear me, write to me.