will a set of 6x9s sound good in the rear quarters of my sr . i want em here and not on the shelf if i make mdf pods and mould with filler will they be solid enuff to make them perform their best .i have alpine components in the doors and a single 1000w 12in alpine sub in the boot powered by a v12 amp. i would also need to sound deaden the rear quarter aswell, right thanx