The suppliers I use for my electronic components don't stock 2 AWG battery wire. So is did a little searching on the Internet and came up with these guys. Don't know where others are finding battery wire but I'm happy with this product. I bought 25 foot of red and 25 foot of black for about a $100 plus shipping (it's heavy). I know I won't use it all for my rewire but it's nice to have just in case.
http://www.delcity.net/store/25!ft-C...e/p_179649.a_1