I am trying to decide on which Polk Speakers for my truck. I have a Rockford Fosgate Punch 100-1db mono 1000rms for the Sub and Punch 400-4 multichannel 400 rms multichannel, Kenwood KDC995. I will also be installing a highliner headliner which allows for 4" speaker on the headliner roof. Will try to add a pic so you get the idea. I am going with MM6501's for the front, db461p 4x6 rear pillar, and db401 for the hidhliner. Any ideas on different model speakers? I have been told the 4" speakers will be a problem being so close to the ears. Amp or dont amp these?