ulrich
+1y
If you want bass, adding more speakers, that are not able to make any bass, won't help. Get a "sub" woofer.
IDK about the size of Bazooka, powered speakers. I have a passive, Bazooka 8" behind the passenger seat. The seat goes one click short of all the way back. Whatevs, I don't have to sit there. I was able to get the stock bench to slide all the way back, with the Bazooka in place.
I wouldn't run the "sub" or the 4" dash speakers full range. If you can't swing a 4 channel amp, with active crossover, at least put some bass blockers in line with the dash speakers.