Speaker/HU sizes?

[Calcartman]

Hello, new member to the forum. I am about to get a 1997 Estoril Blue M3 Sedan from my mother. She just got her 2004 M3 Convertible and is passing the old one on to me :)
I am an audiophile so my first modification will be to put in a new Head Unit, Speakers, and a Speaker Amp. Eventually I may add an 8 Inch subwoofer to complete the sound.

Unfortunatly I have been unable to find out the sizes of the speakers front and rear, or what size the head unit is, and how i go about removing the old one.

Any help would be great, as would suggestions for components or examples of other's setups. Right now i have a Clarion DXZ835MP Single Din head unit that i would like to put in, assuming i can find a decent looking kit to fill in the gap that will remain.

Thanks In Advance :)

[philippek]

www.crutchfield.com

[Calcartman]

Thanks, but i already know about them and when i put my car's info in it says they have no information about what size speakers fit.

[Calcartman]

bump. anybody? I can find the head unit size by measuring, but i would prefer not to rip apart the speaker locations until im actually installing the new ones.