Head Unit replacment

[Haiminger]

Hello
I've got a H3 2007 with Monsoon written on the cargo bay subwoofer area.

Does this mean I have a Bose system or not?

I found 2 after market options I think I can use (for Head Unit replacment)

PAC OS2 (none Bose), or PAC OS2Bose (for Bose)

or

GMAH24 (None bose) or GMAH24b (for Bose)

How can I tell which one I should buy?

Many Thanks in advance for your help

Haim