http://www.knukonceptz.com/productDetail.cfm?prodID=KOL-AK0
That would be a simple solution. Though if you want to do the big 3, I would get about another 5-10ft of 1/0ga, depending on your car. You can also look into just piecing together the items you need. There are usually alot of people in the classifieds selling 1/0 ga pretty cheap. Then, you could just pick up some RCA's, inline fuse and holder for under the hood, distro block (if you want/need one), and the ring terminals you can get pretty cheap at almost any auto parts store.