http://www.leehayward.com/memberpics/ramalho_henrique.htm
This guy looks like some of his plates are old scrap, so check out a junk yard, for old wheels etc
About half way down this page it mentions old car rims
Craig’s list @ about $0.65 pound. Also depending on strength get some bands from either EliteFTS or lifting large.com to compensate. Chains when weighed out per pound are rediculously expensive !!! do the basic math.