Improve plant at Fiat Cinquecento

Hi, At the moment I have installed a Mac Audio Quatro 30 active subwoofer (80WRMS) in meim Fiat Cinquecento and 2 Pioneer 6*9 4-way boxes (60WRMS) on a Mac Audio Cyclone 3000 (2x75WRMS). Radio: JVC KD-LX10R (El-Chameleon) My questions: 1. Problem: I would like to get a better subwoofer, but I don’t have much space in the trunk (only 40cm wide and 40cm high), the Quatro fits in so much, and the rear seats should be preserved in any case! emand recommend a suitable woofer? I hear mainly hip-hop and don’t want to spend more than 200 euros (the quatro cost only 90 at ebay), best with the end stage, or can I use my mac audio cyclone for that? 2. Problem: I’m already aware that it sounds better when the music comes from the front and not only from the hut rack, but the cinquecento has only small 8s or 10s in the front. I’m only a little gifted and as a student I didn’t recommend a suitable woofer. money for expensive doorboards! how can I still get the music forward? hope to answer many thanks already in advance Dr.Evil