I need to replace some of the upper wishbone ball joint boots and tie rod boots in my low km car (25.000 km). There is a link on the forum which refers to polyurethaan boots from www.polyboots.com in Bulgaria but they don't sell anymore to private buyers but only to retailers and only in large quantities. Where can I get rubber or polyurethaan boots in the correct sizes? In the same link the following sizes has been mentioned: Upper wishbone ball joints: 13-30-22, Rear tie rods: 15-30-23, Rear drop links: 13-25-22. Can I use other sizes if they are easier to get? I live in The Netherlands. Thanks.