ahh ok i get u. i was un aware that you were only using 8". i thought you were at least using 10's. my mistake. 8 should fit well in the doors then. still diamonds are pretty steep where you bought them. i dont know much about diomands i bought a set of 12's and i wasnt too impressed with them. they were saposed to be able to handle 500 watt rms, and 100 peak. i hooked them up to a 800 watt peak amp and blew the cone 30 feet in the air. might have been a flawed speaker though. sounds like you got it set up really nice if you cant hear any vibrations at all. ive been trying to kill all the noises in my b210 for over a year.