So I want to not take up any space and I want to add some bass. This is my idea. I'm going with skar audio 3.5 tweeters vx-35 in the dash 6.5 mid woofers fsx65 in the doors and 6.5 subwoofers evl-65 in the rear speaker location. To my understanding ill have bass just not deep shaking bass. I've been looking at custom boxes or under the seat locations but I just thought that those rear subs would give me enough hit. Maybe if I pack the area behind them with poly stuffing and priod to that dynamat the panel. I'm going to be running their 4 channel skv2 100.4ab. I guess I'm asking a pretty specific question but honestly it was just long winded. Will those subs hit decently? Thank you in advance.