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<?php

function ccd_tax_archive_query( $query ) {
	if ( $query->is_main_query() && $query->is_tax( 'cars', 'datsun' ) ) {
		$query->set( 'posts_per_page', '50' );
		$query->set( 'orderby', 'name' );
		$query->set( 'order', 'asc' );
	}
}
add_action( 'pre_get_posts', 'ccd_tax_archive_query' );

?>