what are sizes of the speakers in the doors on the crossfire srt6 and the convertible (if they're different).

thanks so much! brand new to forums and i look forward to talking here.

also, what are the absolute best sounding and most expensive speakers that can fit in that size (it's prob 6.5 or 6.75 but not sure which)... the most expensive speakers i can find on ebay for that size is $150 for the both.