Bundling Materials Internally

Hi SAP Gurus!

Our client has a requirement wherein they have 2 distinct materials (ex. material A and B) and would want to sell them as a bundled item (ex. material Z). I am thinking about using BOMs for this.

In our stock overview, we would want to get the most accurate picture right? My biggest problem is how do you move the stocks from the distinct items to the bundled item?

Ex. Before bundling, my stock situation showed:

10 ea of Material A

20 ea of Material B

But I wanted to bundle 1 ea of Material A and 1 ea of Material B together as 1 ea of Material Z. I wanted to do create 10 ea of Material Z. so after bundling, the stock overview should show:

0 ea of Material A

10 ea of Material B

10 ea of Material Z

Can this be done in SAP using ECC 6.0? How is this setup?

I would really appreciate your response. Thanks in advance.

Peejay