i was going to update this thread but, forgot. they sound awesome but, i did install 4 of them! it sounded really good with 2 but, for me i wanted to see if i get even more bass out of it, so i had 2 installed in the rear panels intially then i had 2 more installed in the floor (cargo area where the jack and other things go, there was enough room) the only thing is that I have to upgrade my amp, that sundown amp does 3000 watts rms on one ohm i think. we have it on one ohm but, the amp has been blown the fuse a few times. so i'm starting to look for another amp. there's a lot of bass like i can feel it all over, it's really crazy i have keep it down at times because of my ears lol i think i might get hearing damage haha i also just had the door speakers upgraded to hybrid audio imagines in the front and the basic mirus in the rear.