Looking for speaker recommendations for '74 Sport's (Jerry) speaker brackets

I finally put mine in a couple of weeks ago. 3 1/2 " MB Quart speakers with a 600 mHz bass blocker on them. They are powered of my Alpine head unit. They sounded so bright, that they over powered my other four speakers. So I turned up the gain on my 60X4 amp and everything sounds great now. No installation tips or troubles whatsoever.