Audio King makes just what you need.

This site has the best prices I could find.

http://www.partsexpress.com/webpage.cfm?DID=7&WebPage_ID=3&Start=2&ObjectGroup_ID=478&sm=1&so=2&search_type=51663918&desc=ASC

They have 0, 2, 4, 8, 10 gauge all extreme high strand count and pure copper.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.