My only experience has been the tweeters in the A-pillar. The premium sound system/receiver (in the 2001 trucks) AM/FM/CD is manufactured by Infinity according to the sound-tech at a local audio-file store. He let me know the speakers are very low quality. I had an original tweeter fail so I went to obtain replacements. I showed him the little tweeter that had a label showing the Infinity logo. He laughed... and remarked, "What a piece of junk"!
I purchased a matched pair that would fit into the factory nests within the A-pillars. ($100 bux for 2 each) WOW!... what a difference from the factory units!
I would say at this point that any up-grade in speaker quality from what Dodge places into these rigs will be a marked improvement.
Size-wise... I think any guy working in one of these audio-file mobile stores will guide you (they see these things all the time) to an exceptional replacement recommendation. Yes... we gotta spend money but, the small investment for quality speakers hooked up to our factory sound systems is an impressive improvement.
William