you will need to add another $50-100 ish for the wiring and rca's

fhrx is the place to go in sydney, dont know if they are close, they should have some morels on dispay iirc, listen to other speakers too dont just go off what i say

dont know of a diy but this might help, http://www.ozhonda.com/forum/showthr...to-amp-to-sub. explains the basics of it, i can show you pics of where i ran my cables if you need some help