Here is a link to show how to properly secure your after-market racing seat belts. Doing it the right way...
http://209.85.171.104/translate_c?hl=en&sl=ja&u=http://www.border-racing.com/2007/09/sw20_2.html&prev=/search%3Fq%3Dborder%2Bracing%2Bjapan%26hl%3Den%26rlz%3D1T4GGLR_en___MY228&usg=ALkJrhjkMlhhSPp7TeRBwQG9J_icUR9_aA
http://209.85.171.104/translate_c?hl=en&sl=ja&u=http://www.border-racing.com/2007/09/sw20_2.html&prev=/search%3Fq%3Dborder%2Bracing%2Bjapan%26hl%3Den%26rlz%3D1T4GGLR_en___MY228&usg=ALkJrhjkMlhhSPp7TeRBwQG9J_icUR9_aA