the last two links are power wire from knukonceptz.
http://www.knukonceptz.com/productMaster.cfm?category=Power Wireyou can get the kandy or the kca series 1/0 gauge wire.
http://www.knukonceptz.com/productMaster.cfm?category=Installation Accessoriesthis link should work for the terminals now to. it replaced the spaces with %20 when i link it on here for whatever reason
about the wiring the other option is:
you get around 10 feet of 1/0 gauge wire to run as your main wire to a distribution block. you then run an 8 gauge wire to the 4 channel amp and a 4 gauge wire to the subwoofer amp. this is optional and probably more complicated than its worth doing for your needs.
i assume you are asking if you are going to buy 1 or both amplifiers..the answer is both.
the big 3 is replacing these 3 wires. the alternator to battery+ terminal wire, the battery - terminal to body wire, the engine to body wire.
this wouldn't solve the starter wire problem. you can however order some extra wire to redo the starter wire and 1-2 ring terminals as well.
and as far as compensation i'm just happy having something to pass the time. i get paid for this stuff irl so on jsp it's just for fun.