For a pure CSS solution, try this plugin, hooked at "parse_templates:
PHP Code:
if (in_array(THIS_SCRIPT, array('index', 'forumdisplay')))
{
$template_hook['headinclude_css'] .= '<style>.forumbit_post .foruminfo {width: 50% !important;} .forumbit_post .forumstats, .forumbit_post .forumstats_2 {width: 15% !important; min-width: 175px;} .forumbit_post .forumstats li, .forumbit_post .forumstats_2 li {display: inline-block !important; width: 80px; text-align: left !important; padding: 0 !important;} .forumthreadpost {position: relative; left: -10%;}</style>';
}