I'm thinking of doing this, would this be possible, and wise?

The ML RX400h has:

http://www.soundlabsgroup.com.au/mar...nson_rx330.htm

1. three front midranges, 65mm
2. two tweets, 20mm
3. two front woofers, 6x9"

I'm thinking of replacing the speakers with:

http://www.dynaudiousa.com/products/car/driver.htm

1. three MD140/2 Midrange midrange
2. two MD100 Tweeters
3. Not sure what Dynaudio to use here?

Is this a good idea? Would this work? Thanks!

-Tony