Will the 2 8's have around the same bass that my 12's do? My setup right now is a Kenwood KDC-HD455U head unit with 2-12in blue flame Plyes 1200W, 2 Kicker 40CS5 door speakers. Soundstream picasso 700W amp. The box for the subs is 39in Long, 17in Wide and 19in Deep. I know its not the best setup...