Question about new Z4

[havas]

Hi all, I'm contemplating upgrading my 3.0SI to the new 35i but I have a question, my current car has some really expensive audio equipment and I was hoping I could move it over. Basically my question is will the new Z4 (nav+hifi) support a 3 way system.

The current set I have consists of 6 inch woofers, 4 inch mids and 1 inch tweeters. They are low profile speakers so not deep at all.

They are quite expensive and I'd rather not have to buy a 2 way kit.

And one last question, has anyone released an ISO adapter that works with the canbus on the Z4? My current Z I get to use my steering controls etc with my after market unit.

Thanks