Saab 9-3 estate 2010 ice question

Hello all,
I have a saab 9-3 that i would love to have the bose speaker system in it.
I have another saab that has the bose system in it and need to take it out and move it all over.

My issue is cant find how to do it anywhere or if any one has done it.
my saab has the kenwood unit in it that was a option in the uk would fitted how would I connect to the amp in the back?
once installed the bose speakers do i need a tech2 to activate bose amp?
is this even possible?

Thanks all