Imys your joking right all this in a cab! , it was hard to get system for your normal sized 12" then these oversized 15" well there 17" lol , i alway buy from 2 store 1st) Car Audio & Security 2nd) Delta Car audio (local store ownen by my uncle)

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Going to be looking at double layering the Dynamat , been looking in at comp alt's cracking out 300amps of juice and dont waste money on yellow tops! Get some leisure batteries either By Numax or Elecsol there cheaper then yellow's and have loads more power - better bang for buck,
well for top end depends on which car mk2/mk4 golf or escort. but got an 1k rms 4ch amp ready for tops, double "0" power cables and 6 awg for subs. i found sum old skool longmill comps thats ive go my eye on. the subs will go in a ported box about 6.5 -7 cuft tuned to 28/30hz