Hi i'm pretty frustrated at this point! I've allready wasted $$$ buyin speakers that i'm. Pretty sure won't fit! Crutchfield says there are 4inch in front doors&6.5 rear. Sonicelectronics says 6.5 front door&6.5 rear a thread posted on here says 8 inch front doors! So as you can see there isn't just a tiny difference in these sizes! So could sumone pleaseeee help me w correct sizing to save me $$$&stress! Most appresheated! Thank you-eric-