E46 Convertible Speaker upgrade.... Plz help!!!

Hi Guys

I'm looking to replace my front and rear speakers in my 2005 330Ci convertible.
Anyone know what's the max size and mounting depth i can go with a standard factory look?

I've been getting a whole lot of different answers. Some say 6.5" midbass will fit in the front but most say otherwise.

Pleeeeeaaaaase help.

Thanks