I was wondering can i use a 4 channel amp to power to subs? The subs are 500 rms each and the 4 channel amp can run 400x2 bridged. Also, i've heard instead of making adapters to fit 6.5 speakers in the front.....you can just take the plastic baffle out and screw the speaker to the metal part. Is that true or its too good to be true because im getting ear fatigue with 5.25 speakers smh. Thanks