Thanks for the responses, but the Miata seats I am installing are from a 1990 and are cloth. One post said that he just replaced the Miata brackets with the Z-brackets with some new holes. But mine isn't that easy. So I'm thinking about cutting the cross-member in the interior and use the Miata brackets instead. I would appreciate any other suggestions without hacking up the cross member or anything else in my 280Z. Thanks