What 6x8 and 6x9 speakers would best go along with my car audio system?

[jllockl561]

Hey i have a 1997 Lincoln Town car that I have been working on for a while, I have a Kenwood KDC-X595 car stereo and a Kenwood X600F 4 channel amplifier, I had 2 6x8 speakers in the front but they cant handle the power and i had 2 6x9 speakers in the back but somehow they blew, so now I wanted to know what speakers would be best suited to go along with this system, the amp pumps out 100 watts to each channel at 4 ohms, I need either 5x7s or 6x8s for the front and 6x9s for the back, thank you