Sounds like an idea, I just want a bit more clarity in the sound to be honest! I have a upgraded Blaupunkt one, would be willing to spend about £100 if they are really worth it. Have you changed yours?
OK so my recommendation is not to do what you have planned.
Leave the rear were they are (we will come to them later).
Go for something like these http://www.caraudiod...alpine-spg-17cs or these http://www.caraudiod...ution-tr650csi.
But also get these http://optauto.easys...SP/AP/6.5-0001"
And install them where they should be ... in front of you. :)
The tweeters can go in the corners of the top dash rail aiming across the car.
Then the rears if they are a Coaxial simply cut the wires to the tweeter part and run them are low end only...
oh and have i changed mine? LOL you might say that...
http://imgur.com/a/zHiA0#0
http://www.theminifo...-son-of-ruckus/