The dash speakers do not have to be small tweeters, as mentioned above. 6x9 components with a bit larger speaker for mids and treble are what I recommended to you. The reason for this is the typical 1" speaker will not play low enough to fill a "gap" between the top end of a 6x9 speaker and the low end of a 1" tweeter.
It's not that a 6x9 woofer cannot play high frequencies, but for great sound in a car using factory speaker locations(exactly as you plan to do) we need to use physics to our advantage. Chrysler had good intentions but the typical budget constraints that car engineers are forced into usually results in a disappointing sound system.