I needed my weight in the front and founded 3 lead bars(looks like weight on a x-cise machine)from a foundry.I tig welded 2 small 3/8" plates to bolt them down too and I use grade 8 bolts to bolt them down. They are 25 lbs each. You could go to Wal-Mart or just about any Sporting goods store and buy bar bell weights,they range from about 2-50 lbs each.