As far as speakers go, i put in a pair of Sony three ways and was happy for a short while. Now i need components.
www.Crutchfield.com has the speaker sizes and what fits. 6.5 or 6.75 in i think.
www.tundrasolutions.com has a list of component speakers that fit depth wise. I want Infinity Kappa... Im not a head unit kind of guy, so im running my amp off the stocker.
My only question is why a six channel amp? The tweeters from components are powered thru the same channel as the front, but seperated with a crossover. A four channel or 5 if you want a sub should do it (or a 4 channel and a single channel amp).
Lastly i am by no means a stereo genius. If anyone wants to dissagree or correct me please do.